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Report of the Joint Russian-Norwegian Working Group on Arctic Fisheries (JRN-AFWG) 2023

Author(s): Daniel Howell , Bjarte Bogstad (IMR), Anatoly Chetyrkin (VNIRO), Johanna Fall (IMR), Anatoly Filin (VNIRO), Elvar H. Hallfredsson , Hannes Höffle , Edda Johannesen (IMR), Yuri Kovalev (VNIRO), Andrey Mikhailov (VNIRO), Alexey Russkikh (VNIRO), Aleksi Stesko (VNIRO), Dmitri Vasilyev (VNIRO), Mikko Vihtakari , Kristin Windsland (IMR) and Natalia Yaragina (VNIRO)

1 - Executive Summary

On 30 th March 2022 all Russian participation in ICES was temporally suspended. Although the announcement of the suspension stressed the role of ICES as a “multilateral science organization”, this suspension applied not only to research activities, but also to the ICES work providing fisheries advice for the sustainable management of fish stocks and ecosystems. As a result of the suspension, the ICES AFWG provided advice only for saithe, coastal cod north, coastal cod south, and golden redfish ( Sebastes norvegicus ). Northeast Arctic (NEA) cod, haddock and Greenland halibut assessments have been conducted outside of ICES in a newly constituted Joint Russian-Norwegian Working Group on Arctic Fisheries (JRN-AFWG). Although this work has been conducted independently of ICES, the methodologies agreed at ICES benchmarks and agreed HCRs (Harvest Control Rules) have been followed in providing this advice.

The Greenland halibut model has been revised at an ICES benchmark in 2023. The JRN-AFWG has agreed to use the new ICES model, with the addition of revising the Russian survey tuning index (as was recommended at the benchmark). Although the overall biomass level in the model has been revised, the trends and advice are similar to the old model. The Greenland halibut advice is for one year to bring the timing back in line with the slope survey, after this a two-year advice cycle will resume. The main worry with that stock is a history of TACs and catches well above advice. Given that the model is now indicating that the stock will drop below B pa by the end of 2023, continuing to set quota above advice poses a risk of serious harm to the stock.

Advice on fishing opportunities for NEA cod

The NEA cod stock is continuing to decline following a period of moderate to poor recruitment. Following the agreed HCR, the advice is constrained by the interannual stability constraint criteria of 20% annual change in quota. Advice is that catches in 2024 should not exceed 453 427 tonnes.

Advice on fishing opportunities for NEA haddock

Advice is that catches in 2024 should not exceed 127 550 tonnes, down 25% from the advice for 2023 (constrained by the interannual stability constraint criteria of 25% annual change in quota. The haddock total stock biomass is declining as the relatively large 2016 yearclass is caught.

Advice on fishing opportunities for Greenland halibut

Advice is that catches in 2024 should not exceed 15 560 tonnes, down 16% from the advice for 2023. The stock is projected to drop below Bpa by the end of 2023. Note that this stock has a history of being fished above advice, and the advised quota is 38% below the TAC for 2023. There are signs of recent good recruitment, and projections indicate that the stock should increase in the medium term if catches are in line with advice.

23.06.23: Tables and figures in chapter 3 have been updated

 

2 - Introduction and ecosystem overview

This report presents the details of the stock assessments conducted for Northeast Arctic cod, haddock and Greenland halibut in ICES subareas 1 and 2. Due to the temporary suspension of Russian scientists from ICES, this is a joint Russian-Norwegian advice and explicitly not an ICES advice. However, the assessment methodology has followed the standard ICES procedure, using the models approved at ICES benchmarks and the Harvest Control Rules which have been evaluated as precautionary by ICES.

The work presented here would typically form a part of the ICES Arctic Fisheries Working Group (AFWG). In order to keep continuity with previous reports, and to minimize the chances of errors arising from renumbering given the tight deadline to prepare this report, the chapter numbers for each stock chapter are maintained from the last AFWG report (ICES 2021). This also allows for anyone with previous AFWG experience to locate information rapidly and easily. As a result, this report contains Chapter 1 (executive summary), Chapter 2 (this introduction, and the ecosystem overview), Chapter 3 (Northeast Arctic cod), Chapter 4 (Northeast Arctic haddock), and Chapter 8 (Greenland halibut).

2.1 - Introduction and ecosystem overview

The aim of this chapter is to identify important ecosystem information influencing the fish stocks. Ecosystem and climate changes, along with fishery, determine the stock dynamics of commercial species. Water temperature and ice conditions influence on distribution of the commercial fishes in the Barents Sea. Apart from this, temperature impacts on growth rate and mortality at the early stages (larvae, juveniles). Currents affect the strength of year-classes by providing transport of eggs, larvae and 0-group of commercial species from the spawning areas into the Barents Sea. Food availability is another important ecosystem driver that influence on the rate of growth and maturation of commercial fishes. It depends not only on the prey availability, but also on feeding competition. Mortality due to predation, including cannibalism, can greatly affect population abundance of commercial species. The impact of ecosystem changes on the dynamics of bycatches of juveniles and non-target species in mixed fisheries should also be taken into account.

Specification of the ecosystem impact on the assessed species :

Cod

The cod stock is decreasing. A further reduction is expected in stock size, which will lead to reduction of cod predation pressure on its prey species. It should be expected relatively less consumption of capelin, haddock and shrimp. The main effect of the ecosystem impact on cod stock dynamics is manifested in the change in the abundance of its recruitment. There were no strong year-classes of cod since 2005 despite high cod SSB. Meso-zooplankton is important for survival of larvae and 0-group cod, so their distribution must overlap with areas of relatively high plankton biomasses. Despite a large number of studies (see e.g. summary in Ottersen et. al, 2014), the underlying mechanism of the impact of the Barents Sea ecosystem on cod recruitment is still not well understood.

Haddock

Warm conditions are positive, but not sufficient to ensure good recruitment and growth. Plankton bloom (timing and strength) and influx are important for recruitment, and feeding conditions indices for the different age classes is important for growth and reproduction. In 2019-2020 feeding conditions of haddock in the Barents Sea were poor, which reduced its condition. Older haddock include a high proportion of benthic invertebrates in their diet, the availability of this prey group is not known. Reduction in cod stock, and increase in capelin could lead to less predation on haddock by cod, and therefore lower mortality on both pre-recruits and younger haddock recruited into the fishery.

Greenland halibut

The distribution of the Greenland halibut stock is very uneven in the Barents Sea and adjacent waters and strongly depends on the migrations that it makes throughout its life. The highest densities of adult fish are observed in spawning grounds on the slope of the continental shelf. Juveniles are widely distributed along the northern part of the shelf and their abundance in the Barents Sea may be affected by water temperature and currents, although the effect of these factors is not fully understood and uncertain. Growth and maturation of the Greenland halibut depend on prey abundance. Greenland halibut feed on zooplankton, capelin, herring, polar cod and other small fishes. Cod can be both predator and food competitor for Greenland halibut. Cannibalism can be also observed in areas with overlapping of adults and juveniles. Mammals can consume Greenland halibut in the spawning areas.

Beaked redfish

As a boreal species, it is benefiting from the warming in the Barents Sea. Its stock has increased in recent years. Feeding condition for beaked redfish in 2021-2022 were likely to be relatively stable. Cod and Greenland halibut are main predators for the beaked redfish. However, as abundance of these species is declining and abundance of capelin and polar cod is increased, the predation pressure on redfish probably is relatively low. In recent years, the mortality rate of young beaked redfish has been high due to bycatches in the shrimp fishery (ICES AFWG, 2023). This strongly depends on the overlap between the distribution areas of redfish juveniles and shrimp fishery areas. The stock size and distribution of shrimp as well as currents and temperature affect this.

Current situation :

Some features of the Barents Sea ecosystem that determined the distribution and development of fish stocks in 2022 and that will affect stocks dynamics in 2023 were considered at the annual meeting between Russian and Norwegian scientists, 15-17 March 2023 and are presented in the national Russian and Norwegian ecosystem status reports. The lack of synopticity and incomplete spatial coverage in the 2022 joint ecosystem survey (van der Meeren and Prozokevitch, 2023) makes the evaluation of the ecosystem status more uncertain than usual. In particular, the abundance of pelagic and 0-group fish is uncertain.

A warming was evident in 2022 in the Barents Sea, with temperatures well above the long-term mean (1981-2010). Ice coverage of the Barents Sea in 2022 was below average and close to that in 2021. Compared to 2021, the area averaged sea surface temperature in the northwest of the Barents Sea was higher by 0.3°C, in the southwest by 0.5°C, and in the southeast by 0.7°C. The area of the Barents Sea occupied by bottom waters with a temperature < 0°C amounted to 37% and was close to the level of the last three years (Fig. 1). According to the expert evaluation, Atlantic water temperature in the Murman Current in 2023 is expected to decline slightly but remain typical of warm years. Due to high temperatures and low sea-ice extent in recent years, the ice coverage of the Barents Sea is expected to remain below normal. Lower than average ice coverage and longer duration of ice-free season, increase primary productivity of the Barents Sea.

Fig. 1
Figure 1. Area of bottom waters with different temperature ranges in the Barents Sea in September-October 2000-2022. 

Euphausiids, amphipods and shrimp are important prey for most commercial fish in the Barents Sea. In 2022 the total biomass of euphausiids was slightly less than long term mean (2015-2021). In recent years, the northern shrimp stock has remained stable, showing fluctuations but without a clear trend.

Capelin, polar cod and young herring are the main forage pelagic fish in the Barents Sea, which are important prey for most predators in the area, including commercial demersal species. These species are very sensitive to various changes in the ecosystem, the influence of predators, fishing, or the plankton availability. Historically, their stocks change rapidly depending on year-classes strength. Capelin abundance is still around average level, although the lack of coverage of pelagic fish in the eastern part of the Barents Sea during the ecosystem survey in 2022 makes the situation somewhat uncertain. The capelin stock is expected to decrease in 2023-2024 due to below average recruitment. The 2022 year- class of herring was very abundant in the ecosystem survey as 0-group and also frequently found in cod stomachs in autumn 2022. This strong herring year class may have a negative impact on capelin recruitment. Polar cod biomass index was at a high level in 2021, the situation in 2022 and the outlook is uncertain due to lack of synoptic coverage during the ecosystem survey.

Cod is a main predator in the Barents Sea. Its diet was relatively stable in recent years; capelin was the main prey. The diet composition of cod in 2022 was similar to that in 2021 (Fig. 2). However, it should be mentioned increased importance of polar cod (up to 12 % by weight), as well as red king crab (from approximately 1 % by weight in previous years to 3.2 % in 2022) and herring. Fig. 3 shows the consumption by cod in the period 1984-2022. Consumption of most prey decreased from 2021 to 2022 due to decrease in cod abundance. Figs 2 and 3 are calculated using the same data but somewhat different methodology (see e. g. ICES AFWG 2021).

Fig. 4 and 5 show the proportion of cod and haddock in the diet of cod. Predation of cod on juvenile cod and haddock was relatively low in recent years, in particular in 2020 when the low abundance of the 2019 and 2020 year-classes of cod and haddock resulted in low abundance of the youngest (ages 0 and 1) cod and haddock for cod as predator.

Individual growth of cod has increased somewhat in the last couple of years. Feeding conditions for cod are expected to be adequate in the near future, as the cod likely will be able to feed on other prey if the capelin stock decreases (see Gjøsæter et al. 2009 for a discussion of ecosystem effects of capelin collapses). Also, the cod stock is decreasing so there will be less competition for food.

The diet composition of haddock is presented in Fig. 6

Diet compositions
Figure 2. Diet composition of cod in 1984-2022, % by weight (The state …, 2023).

 

Cod consumption
Figure 3. Consumption of various prey items by cod in 1984-2022. Norwegian calculations.

 

haddock in cod diet
Figure 4. Proportion of cod in cod diet by predator age group.

 

cod in cod diet
Figure 5. Proportion of haddock in cod diet by predator age group.
 
Figure 6. Diet composition of haddock in 1993-2022, % by weight
Figure 6. Diet composition of haddock in 1993-2022, % by weight

 

Reference

Gjøsæter, H., Bogstad, B., and Tjelmeland, S. 2009. Ecosystem effects of three capelin stock collapses in the Barents Sea. In Haug, T., Røttingen, I., Gjøsæter, H., and Misund, O. A. (Guest Editors). 2009. Fifty Years of Norwegian-Russian Collaboration in Marine Research. Thematic issue No. 2, Marine Biology Research 5(1):40-53. Doi: 10.1080/17451000802454866

Ottersen, G., Bogstad, B., Yaragina, N. A., Stige, L. C., Vikebø, F., and Dalpadado, P. 2014. A review of early life history dynamics of Barents Sea cod (Gadus morhua). ICES Journal of Marine Science 71(8): 2064-2087.

The state of biological resources of the Barents, White and Kara Seas and the North Atlantic in 2023. Murmansk, PINRO 2023, 170 p.

van der Meeren, G. and Prozorkevitch, D. (eds.) 2023. Survey report from the joint Norwegian/Russian Ecosystem Survey in the Barents Sea and the adjacent waters August- December 2022. IMR/PINRO-report series x/2023 (in prep)

3 - Northeast Arctic Cod (Subareas 1 and 2)

3.1 - Status of the fisheries

3.1.1 - Historical development of the fisheries (Table 3.1)

From a level of about 900 000 t in the mid-1970s, total catch declined steadily to around 300 000 t in 1983—1985 (Table 3.1). Catches increased to above 500 000 t in 1987 before dropping to 212 000 t in 1990, the lowest level recorded in the post-war period. The catches increased rapidly from 1991 onwards, stabilized around 750 000 t in 1994—1997 but decreased to about 414 000 t in 2000. From 2000—2009, the reported catches were between 400 000 and 520 000 t, in addition there were unreported catches (see below). Catches have been above the long-term average since 2011 and have decreased from a peak of 986 000 tonnes in 2014 to 693 000 tonnes in 2019-2020 before increasing to 767 000 tonnes in 2021 and decreasing again to 719 000 tonnes in 2022. The fishery is conducted both with an international trawler fleet and with coastal vessels using traditional fishing gears. Quotas were introduced in 1978 for the trawler fleets and in 1989 for the coastal fleets. In addition to quotas, the fishery is regulated by a minimum catch size, a minimum mesh size in trawls and Danish seines, a maximum bycatch of undersized fish, closure of areas having high densities of juveniles and by seasonal and area restrictions.

3.1.2 - Reported catches prior to 2023 (Tables 3.1-3.4, Figure 3.1)

The provisional catch of cod in Subarea 1 and divisions 2.a and 2.b for 2022 reported to the working group is 759 520 t (including both NEA cod and NCC catches).

The historical practice (considering catches between 62°N and 67°N for the whole year and catches between 67°N and 69°N for the second half of the year to be Norwegian coastal cod) has been used for estimating the Norwegian landings of Northeast Arctic cod up to and including 2011 (Table 3. 2 ). The catches of coastal cod subtracted from total cod catches in Subarea 1 and divisions 2.a and 2.b for the period 1960—2022 are given in Table 3.2. For 2012–2022 the Norwegian catches have been analysed by an ECA-version designed for simultaneously providing estimates of catch numbers-at-age for each of the two stocks.

Coastal cod catches in 2022 for the southern and northern area combined were 40 309 tonnes and this amount was as in previous years subtracted from the total cod catch north of 62° N to get the figure for NEA cod used in that assessment (Table 3.1 and 3.2).

The time series for coastal cod catches are now inconsistent with the coastal cod catches presented in ICES AFWG 2023 Chapter 2, as the coastal cod catch time series were revised at WKBarFar, but not the NEA cod time series. At WKBarFar, the proposal for revision of NEA cod catch data series was rejected, as Norwegian data for many years and age groups (especially ages 12+ in years prior to 2013) were changed considerably and the reason for this was not sufficiently explained. WKBarFar recommended that when the revision of the historical Norwegian catch data is ready it should be submitted to ICES for review, ideally by a review attached to the AFWG.

The catch by area is shown in Table 3.1, and further split into trawl and other gears in Table 3.3. The distribution of catches by areas and gears in 2022 was similar to 2021. The nominal landings by country are given in Table 3.4.

There is information on cod discards (see ICES AFWG 2021 section 0.4) but it was not included in the assessment because these data are fragmented and different estimates are in contradiction with each other. Moreover the level of discards is relatively small in the recent period and inclusion of these estimates in the assessment should not change our perception on NEA cod stock size.

In summer/autumn 2018, a Norwegian vessel caught 441 t of cod in the Jan Mayen EEZ, which is a part of ICES area 2a, mostly by long-line. Cod is known to occasionally occur in this area, but rarely in densities which are suitable for commercial fisheries. The cod caught in this area in 2018 was large (65-110 cm), and otolith readings and genetics both showed this cod to be a mix of Northeast Arctic and Icelandic cod. Norway did in 2019-2020 carry out an experimental long-line fishery during four different periods in each year in order to investigate further the occurrence of cod in this area in space and time as well as stock identity. A description of this fishery as well as a historic overview of cod observations around Jan Mayen is given in Bogstad (2023).

Quotas, catches and advice for the period 2019-2023 for cod in the Jan Mayen area are given in Table 3.1a. These catches are not included in the catch statistics for Northeast Arctic cod.

3.1.3 - Unreported catches of Northeast Arctic cod (Table 3.1)

In the years 2002—2008 certain quantities of unreported catches (IUU catches) have been added to the reported landings. More details on this issue are given in the Working group reports for that period.

There are no reliable data on level of IUU catches outside the periods 1990—1994 and 2002—2008, but it is believed that their level was not substantial enough to influence on historical stock assessment.

According to reports from the Norwegian-Russian analysis group on estimation of total catches the total catches of cod since 2009 were very close to officially reported landings.

3.1.4 - TACs and advised catches for 2022 and 2023

The Joint Norwegian-Russian Fisheries Commission (JNRFC) agreed on a cod TAC of 708 480 t for 2022, and in addition 21 000 t Norwegian coastal cod. The total reported catch of 759 520 t in 2022 was 30 040 t above the agreed TAC. Since 2015 JNRFC has decided that Norway and Russia can transfer to next year or borrow from last year 10% of the cod country’s quota. That may lead to some deviation between agreed TAC and reported catch. As an extraordinary measure due to expected underfishing of the TAC in 2021, JNRFC decided that it should be possible to transfer 15% of the TAC between 2021 and 2022, but for 2022-2023 the transfer was reset back to the agreed 10%.

The advice for 2023 given by JRN-AFWG in 2022 was 566 784 t based on the agreed harvest control rule. The quota established by JNRFC for 2023 was set equal to the advice. In addition, the TAC for Norwegian Coastal Cod was set to the same value for 2023 as for 2022: 21 000 t.

3.2 - Status of research

3.2.1 - Fishing effort and CPUE (Table A1, Figure 3.4-3.5)

CPUE series of the Norwegian and Russian trawl fisheries are given in Table A1. The data reflect the total trawl effort (Figure 3.4), both for Norway and Russia. The Norwegian series is given as a total for all areas. Norwegian data for 2011–2022 are not necessarily compatible with data for 2007 and previous years. Norwegian CPUE declined from 2020 to 2022 and reached the lowest level in the 2011-2022 time series (Figure 3.5). Note that double trawl is now the dominant gear in the Norwegian trawl fishery (Nedreaas WD02), but trends are the same for single and double trawl. Russian CPUE was the lowest since 2008 in all areas and in area 2a it was the lowest since 1999.

3.2.2 - Survey results - abundance and size at age (Tables 3.5, A2-A14)

Joint Barents Sea winter survey (bottom trawl and acoustics) Acronyms: BS-NoRu-Q1 (BTr) and BS-NoRu-Q1 (Aco)

The survey was carried out as planned with relatively good spatial coverage, although bad weather and ice limited the coverage somewhat.

Before 2000 this survey was made without participation from Russian vessels, while in 2001—2005, 2008—2016 and 2018-2023 Russian vessels have covered important parts of the Russian zone. In 2006—2007 the survey was carried out only by Norwegian vessels. In 2007, 2016, and 2021-2023 the Norwegian vessels were not allowed to cover the Russian EEZ. The methods for adjustment for incomplete area coverage are described in detail in Fall et al. (2023) and references therein. Table 3.5 shows areas covered in the time-series and the additional areas implied in the method used to adjust for missing coverage in the Russian Economic Zone.

Regarding the older part of this time-series it should be noted that the survey prior to 1993 covered a smaller area (Jakobsen et al . 1997), and the number of young cod (particularly 1- and 2-year old fish) was probably underestimated. Changes in the survey methodology through time are described in Fall et al. 2023 (Appendix 2). Note that the change from 35 to 22 mm mesh size in the codend in 1994 is not corrected for in the time-series. This mainly affects the age 1 indices.

It is likely that in recent years the coverage in the February survey (BS-NoRu-Q1 (BTr) and BS-NoRu-Q1 (Aco)) has been incomplete, in particular for the younger ages. This could cause a bias in the assessment, but the magnitude is unknown. The 2014–2023 surveys covered considerably larger areas than earlier winter surveys, and showed that most age groups of cod (particularly ages 1 and 2) were distributed far outside the standard survey area. The bottom trawl survey estimates including the extended area for 2014-2023 were used in the tuning data separately from the same index before 2014, as decided at WkBarFar 2021.

Lofoten acoustic survey on spawners Acronym: Lof-Aco-Q1

The estimated abundance indices from the Norwegian acoustic survey off Lofoten and Vesterålen (the main spawning area for this stock) in March/April are given in Table A4. A description of the survey, sampling effort and details of the estimation procedure can be found in Korsbrekke (1997). The 2023 survey results in biomass terms was 128 thousand tonnes, this is 30 % below the 2022 level and the lowest since 2001.

A pilot survey on spawning grounds north of the area covered by the Lofoten survey was carried out in 2023 (Korsbrekke 2023 WD03), at about the same time and in the same way as the Lofoten survey. The total abundance in that area was about 16% of that in the Lofoten area. The area covered by this pilot survey is mostly covered also by the winter survey, but with much larger distance between transects at that time. 

Russian autumn survey Acronym: RU-BTr-Q4

Abundance estimates from the Russian autumn survey (November-December) are given in Table A9 (acoustic estimates) and Table A10 (bottom trawl estimates). The entire bottom trawl time-series was in 2007 revised backwards to 1982 (Golovanov et al ., 2007, WD3), using the same method as in the revision presented in 2006, which went back to 1994. The new swept area indices reflect Northeast Arctic cod stock dynamics more precisely compared to the previous one - catch per hour trawling. The Russian autumn survey in 2006 was carried out with reduced area coverage. Divisions 2a and 2b were adequately investigated in the survey in contrast to Subarea 1, where the survey covered approximately 40% of the long-term average area coverage. The Subarea 1 survey indices were calculated based on actual covered area (40 541 sq. miles). The 2007 AFWG decided to use the “final" year class indices without any correction because of satisfactory internal correspondence between year class abundances at age 2—9 years according to the 2006 survey and ones due to the previous surveys.

This survey was not conducted in 2016 , but was carried out in 2017, when 79% of the standard survey area was covered (Sokolov et al 2018, WD 11). The index shows a reliable internal consistence and it was decided to use it in the assessment. This survey was not carried out in 2018-2022 and is discontinued.

Joint Ecosystem survey Acronym: Eco-NoRu-Q3 (Btr)

Swept area bottom trawl estimates from the joint Norwegian-Russian ecosystem survey in August-September for the period 2004–2022 are given in Table A14. This survey normally covers the entire distribution area of cod at that time of the year.

In 2014 this survey had an essential problem with area coverage in the north-west region because of difficult ice conditions. In the area covered by ice in 2014 a substantial part of population was distributed during 2013 survey. So, based on those observations AFWG decided in 2015 to exclude 2014 year from that tuning series in current assessment. In 2016 there was incomplete coverage in the international waters and close to the Murman coast. An adjustment for this incomplete coverage was made based on interpolation from adjacent areas (Kovalev et al 2017, WD 12). At this time of the year, usually a relatively small part of the cod stock is found in the area which was not covered in 2016. In 2017 and 2019 the coverage was close to complete, although the far northeastern part of the survey area (west of the north island of Novaya Zemlya) was not covered due to military restrictions. In 2018, a large area in the eastern part of the Barents Sea was not covered. Thus it was decided not to include 2018 data from this survey in the assessment.

The coverage in 2020 was less synoptic than usual, but it was decided to keep them in the assessment. The 2021 coverage was good, although as in several previous years, most of the international waters in the Barents Sea was not covered.

In 2022 the coverage of the Russian EEZ was done much later than the coverage of the Norwegian EEZ, with the entire survey period being from 15 August to 3 December (van der Meeren and Prozorkevitch, 2023). Also some areas were not covered. Indices based on the combined data have been calculated (Table A14), but due to the poor synopticity and incomplete coverage it was decided not to use this index in this year’s assessment.

The survey indices are calculated both the BioFox and StoX calculation methods, and as in earlier years, the Biofox series was used in the tuning. A research recommendation from WkBarFar was to unify these two methods for estimating indices from ecosystem survey. However, the benchmark decided to use weight at age from the StoX in calculations of weight at age used in the assessment.

Survey results - length and weight-at-age (Tables A5-A8, A11-A12, A15, A16)

Length-at-age is shown in Table A5 for the Joint survey in the Barents Sea in winter, in Table A7 for the Lofoten survey and in Table A11 for the Russian survey in October-December. Weight-at-age is shown in Table A6 for the Norwegian survey in the Barents Sea in winter, in Table A8 for the Lofoten survey, Table A12 for the Russian survey in October-December and Table A15 for the BESS survey (calculated using StoX). Table A16 presents combined data on Weight-at-age from winter survey and Lofoten survey.

Length and weight at age in the Joint winter survey in the Barents Sea was fairly stable from 2022 to 2023, with some increase noted for ages 4 and 7. Weight at age in the Lofoten survey increased from 2022 to 2023 for age groups 7 and decreased for ages 9 and 10. The size at age in the BESS survey increased from 2021 to 2022 for ages 3 and older, this could be partly related to the later timing of the survey.

3.2.3 - Age reading

The joint Norwegian-Russian work on cod otolith reading has continued, with regular exchanges of otoliths and age readers (see ICES AFWG 2021 chapter 0.7). The results of fifteen years of annual comparative age readings are described in Yaragina et al . (2009). Zuykova et al . (2009) re-read old otoliths and found no significant difference in contemporary and historical age determination and subsequent length at age. However, age at first maturation in the historical material as determined by contemporary readers is younger than that determined by historical readers. Taking this difference into account would thus have effect on the spawning stock-recruitment relationship and thus on the biological reference points. The overall percentage agreement for the 2017–2018 exchange was 87.7% (Zuykova et al. 2020 ) . The main reason for cod ageing discrepancies between Russian and Norwegian specialists remains the same, representing the latest summer growth zone, and different interpretations of the false zones. The general trend is that the Russian readers assign slightly lower ages than the Norwegian readers compared to the modal age for all age groups. This is opposite of what we have seen in previous readings, where the Russian readers has tended to be slightly overestimating the age compared to the Norwegian readers.

The trend with bias in NEA cod age determination registered for some years of the period 1992–2018 between experts of both countries is a solid argument to continue comparative cod age reading between PINRO and IMR to monitor the situation. The German participant has expressed an intention to join the age reading cooperation in future.

3.3 - Data available for use in assessment

Data for the period 1946–1983 are taken from the AFWG 2001 report (ICES CM 2001/ACFM:19) and were not revised at the WKBarFar benchmark in 2021.

3.3.1 - Catch-at-age (Table 3.6)

For 2022, age compositions from all areas were available from Norway, Russia, Spain and Germany.

There is still a concern about the biological sampling from parts of the Norwegian fishery that may be too low. Also the split between NEA cod and coastal cod may be affected by the sampling coverage. Data from Norwegian Coast Gard vessels’ length measurements onboard Russian vessels in some quarters of 2022 were used for calculation of age composition of Russian catches in Division 2b.

3.3.2 - Survey indexes available for use in assessment (Table 3.13, A13)

The following survey data series were available:

Fleet code Name Place Season Age Years
Fleet 15* Joint bottom trawl survey Barents Sea Feb-Mar 3–12+ 1981–2013, 2014-2023
Fleet 16 Joint acoustic survey Barents Sea+Lofoten Feb-Mar 3–12+ 1985–2023
Fleet 18 Russian bottom trawl surv. Barents Sea Oct-Dec 3–12+ 1982–2017
Fleet 007 Ecosystem surv. Barents Sea Aug-Sep 3–12+ 2004–2021**

*Survey indices for Fleet 15 were divided by two series (before and after 2014) in model tuning as decided at WKBarFar 2021.
**2022 data not used in the assessment

The tuning fleet file is shown in Table 3.13. Note that the joint acoustic survey (sum of Barents Sea and Lofoten acoustic survey indices) is given in Table A13.

Survey indices for Fleet 15 have been multiplied by a factor 100, while survey indices for Fleets 007, 16 and 18 have been multiplied by a factor 10. This is done to keep the dynamics of the surveys even for very low indices, because some models (e.g. XSA) adds 1.0 to the indices before the logarithm is taken.

3.3.3 - Weight-at-age (Tables 3.7-3.9, A2, A4, A6, A8, A12, A16).

Catch weights

For 2022, weight-at-age in the catch for areas 1, 2a and 2b was provided by Norway, Russia, Spain and Germany (Table 3.7). For ages up to and including 11, observations are used. Following the WKBarFar 2021 decision, weight at age in catch for the years 1983-present for ages 12-15+ are calculated by a cohort-based von Bertalanffy approach used to replace previous fixed values.

Stock weights

For ages 1—11 stock weights-at-age at the start of year y (Wa,y ) for 1983—2023 are calculated combining, when available, weight at age from the Winter, Lofoten, Russian autumn and ecosystem surveys. The details are given in the Stock Annex. For ages 12-15+ a similar approach as for weight at age in the catch was used.

3.3.4 - Natural mortality including cannibalism (Table 3.12, Table 3.17)

A natural mortality (M) of 0.2 + cannibalism was used. Cannibalism is assumed to only affect natural mortality of ages 3-6.

2022 data are available and 2021 data have been updated.

The method used for calculation of the prey consumption by cod described by Bogstad and Mehl (1997) is used to calculate the consumption of cod by cod for use in cod stock assessment. The consumption is calculated based on cod stomach content data taken from the joint PINRO-IMR stomach content database (methods described in Mehl and Yaragina 1992). On average about 9000 cod stomachs from the Barents Sea have been analysed annually in the period 1984—2022.

These data are used to calculate the per capita consumption of cod by cod for each half-year (by prey age groups 0—6 and predator age groups 1–11+). It was assumed that the mature part of the cod stock is found outside the Barents Sea for three months during the first half of the year. Thus, consumption by cod in the spawning period was omitted from the calculations.

An iterative procedure was applied to include the per capita consumption data in the SAM run. It is described in detail in Stock Annex.

For the cod assessment data from annual sampling of cod stomachs has been used for estimating cannibalism, since the 1995 assessment. The argument has been raised that the uncertainty in such calculations are so large that they introduce too much noise in the assessment. A rather comprehensive analysis of the usefulness of this was presented in Appendix 1 in the 2004 AFWG report. The conclusion was that it improves the assessment.

The data on cod cannibalism for the historical period (1946—1983) was included in assessment during the benchmark to make the time-series consistent (ICES 2015, WKARCT 2015). These estimates were based on hindcasted values of NEA cod natural mortality at ages 3—5 using PINRO data base on food composition from cod stomach for the historical period (Yaragina et al . 2018).

It was noted that for 2022, the consumption estimates may somewat overestimate age 1 consumption and underestimate age 3+ consumption. This is due to lack of length measurements for stomachs which contained high cod weight, they likely represent large prey but have partly been allocated to small prey as length measurements were mostly available for stomachs containing low weight of cod.

3.3.5 - Maturity-at-age (Tables 3.10-3.11)

Historical (pre–1982) Norwegian and Russian time-series on maturity ogives were reconstructed by the 2001 AFWG meeting (ICES CM 2001/ACFM:19). The Norwegian maturity ogives were constructed using the Gulland method for individual cohorts, based on information on age at first spawning from otoliths. For the time period 1946—1958 only the Norwegian data were available. The Russian proportions mature-at-age, based on visual examinations of gonads, were available from 1959.

Since 1982 Russian and Norwegian survey data have been used (Table 3.10). For the years 1985—2023, Norwegian maturity-at-age ogives have been obtained by combining the Barents Sea winter survey and the Lofoten survey. Russian maturity ogives from the autumn survey as well as from commercial fishery for November-February are available from 1984 until present. The Norwegian maturity ogives tend to give a higher percent mature-at-age compared to the Russian ogives, which is consistent with the generally higher growth rates observed in cod sampled by the Norwegian surveys. The percent mature-at-age for the Russian and Norwegian surveys have been arithmetically averaged for all years, except 1982—1983 when only Norwegian observations were used and 1984 when only Russian observations were used.

Russian data for the autumn survey for 2018 and later years were not available as the survey was not conducted. In WD1 5 , 2019, updated correction factors to allow for this when calculating the combined maturity-at-age in 2019 were calculated, based on historical differences between Norwegian and Russian data. These correction factors were then applied to the Norwegian data for 2020-2023.

The approach used for calculating maturity at age is the same as previously used and consistent with the approach used to estimate the weight-at-age in the stock, except that no data from the BESS survey are used. However, since survey data, both abundance indices and proportion mature, have been revised, the entire time series of ogives back to 1994 was revised at the benchmark. The proportions of mature cod for age 13–15 are set to 1 for the period 1984–present.

Maturity-at-age for cod has been variable the last years, particularly for ages 6–9. According to the combined data, maturity at age increased from 2022 to 2023 for age groups 7-9 (Table 3.11).

3.4 - Assessment using SAM

3.4.1 - SAM settings (Table 3.14)

The SAM model settings optimised by WKBarFar are shown in Table 3.14.

3.4.2 - SAM diagnostics (Figure 3.2 a-e)

Residuals for the SAM run are shown in Figure 3.2a, while model retrospective plots of F, SSB and recruitment are shown in Figure 3.2b. Historical retrospective pattern for final SAM run are shown in Figure 3.2c. Figure 3.2d compares observed and modelled catches in tonnes and Figure 3.2e shows the catchability by survey and age group.

The retrospective pattern is generally good (Figure 3.2b), with absolute values of Mohn’s rho < 10% for SSB, R and F.

The observed catch in tonnes in 2021 and 2022 is higher than modelled, and for 2021 just inside the confidence interval.

3.4.3 - Results of assessment (Tables 3.15-3.18, Figure 3.1)

Summaries of landings, fishing mortality, stock biomass, spawning stock biomass and recruitment since 1946 are given in Table 3.18 and Figure 3.1.

The fishing mortalities and population numbers are given in Tables 3.15 and 3.16.

The estimated F5-10 in 2022 is 0.574, which is above Fpa and within the Fmsy range (Table 3.18). Fishing mortality has been increasing steadily in recent years. The spawning stock biomass in 2023 is estimated to be 719 kt (Table 3.20), which is high but much lower than the peak in 2013 (2,239 kt). One should bear in mind that in the early part of the time-series (before the 1980s) the fraction at age of mature fish was considerably lower.

Total stock biomass in 2023 is estimated to 1,610 kt, which is somewhat below the long-term mean and well below the highest level observed after 1955 (3,728 kt in 2013).

It is noted that the exploitation pattern is still dome-shaped with a marked decrease in selectivity above age 12, although the dome-shape is not as strong than in assessments made before the 2021 benchmark.

M values (M = 0.2+cannibalism mortality) are given in Table 3.17. For ages 3—5 the M matrix in 1946—1983 also includes cannibalism mortality since the benchmark meeting in 2015 (WKARCT 2015).

3.5 - Reference points and harvest control rules

The current reference points for Northeast Arctic cod were estimated by SGBRP (ICES CM 2003/ACFM:11) and adopted by ACFM at the May 2003 meeting.

At the 46th session of JRNFC a new version of the management rule was adopted (see section 3.7.3) . The TAC advice for 2024 is based on the agreed harvest control rule.

3.5.1 - Biomass reference points

The values adopted by ACFM in 2003 are Blim = 220 000 t, Bpa = 460 000 t. (ICES CM 2003/ACFM:11).

3.5.2 - Fishing mortality reference points

The values adopted by ACFM in 2003 are Flim = 0.74 and Fpa = 0.40 (ICES CM 2003/ACFM:11). The Fmsy for NEA cod was estimated by WKBaRFar 2021 to be in the range 0.40 - 0.60.

3.5.3 - Harvest control rule

The history of how the harvest control rule has developed is given in the 2017 AFWG report. JNRFC in 2015 asked ICES to explore the consequences of 10 different harvest control rules. This was done by WKNEAMP (ICES 2015, 2016). JNRFC in 2016 adopted one of the rules explored by WKNEAMP (Rule 6 in that report).

The current rule reads as follows:

The TAC is calculated as the average catch predicted for the coming 3 years using the target level of exploitation (Ftr ).

The target level of exploitation is calculated according to the spawning stock biomass (SSB) in the first year of the forecast as follows:

- if SSB < Bpa, then Ftr = SSB / Bpa × Fmsy ;

- if Bpa ≤ SSB ≤ 2×Bpa, then Ftr = Fmsy ;

- if 2×Bpa < SSB < 3×Bpa, then Ftr = Fmsy × (1 + 0.5 × (SSB - 2×Bpa) / Bpa );

- if SSB ≥ 3×Bpa, then Ftr = 1.5 × Fmsy ;

where Fmsy=0.40 and Bpa =460 000 tonnes.

If the spawning stock biomass in the present year, the previous year and each of the three years of prediction is above Bpa, the TAC should not be changed by more than +/- 20% compared with the previous year’s TAC. In this case, Ftr should however not be below 0.30.

3.6 - Prediction

3.6.1 - Prediction input (Tables 3.19a)

The input data to the short-term prediction with management option table (2023—2026) are given in Table 3.19a. For 2023 stock weights and maturity were calculated from surveys as described in Sections 3.3.2 and 3.3.4.

Catch weights in 2023 onwards and stock weights in 2024 and onwards for age 3–11 are predicted by the method described by Brander (2002), where the latest observation of weights by cohort are used together with average annual increments to predict the weight of the cohort the following year. The method is given by the equation

W(a+1,y+1)=W(a,y) + Incr(a), where Incr(a) is a “medium term” average of Incr(a,y)= W(a+1,y+1)-W(a,y)

This method was introduced in the cod prediction in the 2003 working group. Since 2005 working group an average of the 3 most recent values of annual increments have been used for predicting stock weights. For catch weights the last 5-year period for averaging the increments is used (changed from 10-year period at the 2021 benchmark).

The maturity ogive for the years 2024—2026 was predicted by using the 2021-2023 average. The fishing pattern in 2023 and later years was set equal to the previous 3 years. The stock annex prescribes average over 5 years, but as there has been a clear shift in the fishing pattern in recent years towards exploiting younger fish, a 3-year average was considered to be more appropriate.

The stock number-at-age in 2023 was taken from the final SAM run (Table 3.16) for ages 4 and older. The recruitment at age 3 in the years 2023—2026 was estimated as described in section 3.7.2. Figure 3. 3 shows the development in natural mortality due to cannibalism for cod (prey) age groups 1-3 together with the abundance of capelin in the period 1984—2022. There was a decreasing trend in natural mortality, but the average M values for the last 3 years are used to predict natural mortality of age groups 3—6 for years 2023—2026 (based on benchmark decision, WKARCT 2015 and unchanged at WKBaRFar 2021). Predation mortalities in 2022 for age 3 and older could be somewhat underestimated as described in section 3.3.4.

The assessment shows an increasing F from 2012 to 2022. In accordance with the benchmark decision (WKARCT 2015, not reviewed at WKBarFar 2021) and with support from AFWG-2019 WD 11 (Kovalev and Chetyrkin, 2019), the last year’s assessment F in terminal year 2022 (status quo) is used for F in the intermediate year (2023). Table 3.19 shows input data to the predictions. The results of prediction show that the catch in 2023 predicted using Fsq is very close to the agreed TAC.

3.6.2 - Recruitment prediction (Table 3.19b-d )

At the 2008 AFWG meeting it was decided to use a hybrid model, which is a weighted arithmetic mean of different recruitment models. It was agreed to use the same approach this year. The input data for those models are the following time-series; ice coverage, intensity of interaction between the arctic and boreal oceanic systems on the shelf of the Barents Sea, temperature and oxygen saturation at the Kola section. Input data to the prediction are presented in Tables 3.19b-c and prognosis from all the models, including the hybrid is presented in Table 3.19d. Since 2014 the hybrid model is based on objective weighting of different sub-models and includes the RCT3 model (see AFWG report 2021 section 1.4 for details). The numbers-at-age 3 calculated by the hybrid method were: 446 million for the 2020 year class, 209 million for the 2021 year class, 439 million for the 2022 year class and 400 million for the 2023 year class (Table 3.19d).

Although age 3 indices from the winter bottom trawl and acoustic surveys are now also included in the SAM tuning, it was decided at the benchmark to continue using in the predictions recruitment estimates at age 3 in the assessment year ( intermediate year in prediction) from the hybrid model. The difference between the SAM estimate and the hybrid model estimate of age 3 in 2023 was large (188 vs. 446 million individuals). Such a discrepancy was also observed in the 2022 assessment (189 vs. 476 million individuals for 2019 year class), and the SAM estimate for the 2019 year class at age 3 is practically unchanged this year (from 189 million in 2022 assessment to 197 million in this year’s assessment). It is also noted that the retrospective pattern for recruitment estimated by SAM in recent years is quite good as shown in Fig. 3.2b (Mohn’s rho 7%).

Despite these discrepancies between hybrid and SAM in recent years and the associated inconsistent historical retrospective pattern for recruitment (Fig 3.2c), it was decided to use the hybrid model also this year. One reason for this is that the predicted generally low recruitment level is in line with recent survey observations of trends year-class strength, although the recruitment values by year differ.

However, a review of the methodology for predicting recruitment should be carried out before next year’s working group and if possible an improved methodology should be proposed.

3.6.3 - Prediction results (Tables 3.20-3.21)

The catch corresponding to Fsq in 2023 is 573 kt (Table 3.20). The resulting SSB in 2024 is 588 kt, which is 18 % lower than the SSB in 2023. Table 3.20 shows the short-term consequences over a range of F-values in 2024. The detailed outputs corresponding to Fsq in 2023 and the F corresponding to the HCR and Fpa in 2024 is given in Table 3.21. Summarised results are shown in the text table below.

Since SSB in 2023 is between Bpa =460 000 t and 2 × Bpa = 920 000 t, F = 0.40 is used in the 3-year prediction, giving catches of 357 377, 354 196 and 355 390 tonnes in 2024, 2025 and 2026, respectively. The average of this is 355 655  tonnes. According to the HCR the maximum year-to-year decrease in TAC is limited by 20 % which corresponds to a TAC of 453 427 tonnes for 2024. The HCR also says that SSB in the 3 preceding years (2024-2026) should be above Bpa for the 20% limit to apply, and a prediction with F=0.40 gives a SSB in 2026 of 558 361 tonnes, which is above Bpa .

Cod in ICES subareas 1 and 2. Annual catch options. All weights are in tonnes.

Basis Total catch (202 4 ) Ftotal (202 4 ) SSB(202 5 ) % SSB change * % TAC change ** % Advice change ***
ICES advice basis  
Management plan^ 453 427 0. 540 506 615 - 14 -20 -20
Other options  
F = 0 .4**** 357 377 0.40 586 401 0 -37 -37
F = 0 0 0 900 153 53 -100 -100
F = F202 2 475 016 0.574 489 013 -17 -16 -16
F pa 357 377 0.40 586 401 0 -37 -37
F lim 571 054 0.74 412 367 -30 1 1

Weights in tonnes.

^ 20 % decrease from TAC 2023

* SSB 2025 relative to SSB 2024.

** Catch 2024 relative to TAC 2023

*** Advice for 2024 relative to advice for 2023

**** F = 0.40 corresponds to the lower bound of the FMSY range (0.40-0.60).

This catch forecast covers all catches. It is then implied that all types of catches are to be counted against this TAC. It also means that if any overfishing is expected to take place, the above calculated TAC should be reduced by the expected amount of overfishing.

3.6.4 - Medium-term predictions ( Figure 3.8)

The inputs for medium-term prediction are the same as for short-term ones. For years after terminal year in short-term prediction the same value as for this year are used for all parameters except target fishing mortality which is according to the HCR.

The stock size has been decreasing in recent years due to low incoming recruitment, downward adjustment of the stock size (due to model modifications at the benchmark in 2021) and increasing fishing mortality. The increase in fishing mortality is partly due to the 20% limit on annual reduction of TAC and 10-15 % transferring of quotas between years. Recruitment in coming years (2021-2024 year classes) is also estimated to be below average. The reason for low recent recruitment is not known. Previous periods of low recruitment have mainly occurred when temperature is below average, which is not the case at present.

The predictions for 2025 and following years indicate that a further 20% reduction in catch from 2024 to 2025 will be advised and then catches will stabilize around 350 000 tonnes and stock size will also stabilize around 1.3 million tonnes (Figure 3.8). However, SSB is now approaching Bpa , below which level recruitment may be impaired. Also, due to rather uncertain medium-term forecast in stock size, SSB might fall below Bpa in coming years in which case advice according to the agreed HCR will be further reduced and the 20 % stability constraint will no longer be applied.

3.7 - Comparison with last year’s assessment and prediction

3.7.1 - Comparison to 2022 assessment

The text table below compare this year’s estimates with the final 2022 JRN-AFWG estimates for numbers at age (millions), total biomass, spawning biomass (thousand tonnes) in 2022, as well as reference F for the year 2021.

2023 vs 2023 survey comparison

*estimated by recruitment models **assuming Fsq

In the current assessment, the number at all ages was adjusted downwards compared to the 2022 JRN-AFWG assessment.

3.7.2 - Comparison to prediction

The change in the advice is large compared to last year. The advice for 2024 is 453 427 tonnes, while the advice for 2023 given by JRN-AFWG was 566 784 tonnes.

The 2023 assessment adjusted the stock size in recent years downwards. The main tendency for stock decrease in recent years was similar to last year’s assessment.

3.8 - Concerns with the assessment

The WG realizes that imprecise input data, in particular the catch-at-age matrix, and discontinuation of some surveys as well as incomplete spatial coverage and reduced synopticity in surveys could be a main obstacle to producing precise stock assessments, regardless of which model is used.

3.9 - Additional assessment methods

All models use the same tuning data.

3.9.1 - TISVPA (Tables 3.22-3.24, Figure 3.6a-c )

This year the TISVPA model was applied to NEA cod with the same settings as last year and using the same data as SAM except that natural mortality values from cannibalism were taken from the SAM runs. During WG the results of exploratory runs using the TISVPA model (Tables 3.22-3.24) were discussed. The residuals of the model approximation of catch-at-age and “fleets” data are presented in Figure 3.6a. Likelihood profiles for different data source are presented in Figure 3.6b. Retrospective run results are shown in Figure 3.6c.

3.9.2 - Model comparisons ( Figures 3.2a, 3.6a, 3.7)

Figure 3.7 compares the results of SAM and TISVPA, showing F, SSB, TSB and recruitment. Trends are similar in all models, but TISVPA gives higher F in 2022 and lower biomass in 2023 than SAM. However, recruitment in 2022 is higher in TISVPA than in SAM. Both models show a reasonable retrospective pattern (F igures 3.2a, 3.6c).

3.10 - New and revised data sources

This section describes some data sources, which could be revised or included in the assessment in the future.

3.10.1 - Consistency between NEA cod and coastal cod catch data (Table 3.2)

Consistency between the catch data used for NEA cod and coastal cod should be ensured. The revised catch figures used in the coastal cod assessment do not correspond to the difference between the total cod catch and the catch used in the NEA cod assessment (Table 3.2). These discrepancies will be adjusted when the NEA cod catch series are revised (section 3.2.2).

3.10.2 - Discard and bycatch data

Work on updating discard and bycatch data series is ongoing. Revised bycatch estimates in numbers for the period 2005-2022 are shown in ICES AFWG-2023 Fig. 0.1. At WKARCT in 2015 it was, however, decided not to include those data in the catch-at-age matrix.

The bycatch mainly consists of age 1 and 2 fish, but the bycatch is generally small compared to other reported sources of mortality: catches, discards and the number of cod eaten by cod. From 1992 onwards, bycatches of age 3 and older fish are negligible, because use of sorting grids was made mandatory. However, in 1985, bycatches of age 5 and 6 cod were about one third of the reported catches for those age groups. The year class for which the bycatches were highest, was the 1983 year class (total bycatch of age 2 and older fish of about 60 million, compared to a stock estimate of about 1300 million at age 3.

3.11 - References

Anon. 2022. Report of the Joint Russian-Norwegian Working Group on Arctic Fisheries (JRN-AFWG) 2022. IMR-PINRO Report Series 6-2022, 213 pp.

Bogstad, B. 2023. Jan Mayen—a new spawning and fishing area for Atlantic cod Gadus morhua . Polar Biology 46: 103-109. https://doi.org/10.1007/s00300-022-03102-8

Bogstad, B. and Mehl, S. 1997. Interactions Between Cod ( Gadus morhua ) and Its Prey Species in the Barents Sea. Forage Fishes in Marine Ecosystems. Proceedings of the International Symposium on the Role of Forage Fish-es in Marine Ecosystems. Alaska Sea Grant College Program Report No. 97-01: 591-615. University of Alaska Fairbanks.

Brander, K. 2002. Predicting weight at age. Internal ICES note to assessment working groups. 2003. Software implementation of process models. Working Document No. 2 to the Arctic Fisheries Working Group, San Sebastian, Spain, 23 April- 2 May 2003.

Fall, J., Wenneck, T. de Lange, Bogstad, B., Fuglebakk, E., Godiksen, J., Høines, Å., Korsbrekke, K., Skage, M. L., Staby, A., Tranang, C. Aa., Windsland, K., Russkikh, A. A., and Kharlin, S. 2023. Fish investigations in the Barents Sea winter 2022. IMR-PINRO Joint Report Series 1-2023, 100 pp.

Golovanov S.E., Sokolov A.M., and Yaragina, N.A. 2007. Revised indices of the Northeast Arctic cod abundance according to the 1982-2006 data from Russian trawl-acoustic survey (TAS). Working Document #3 for AFWG 2007.

ICES 2001. Report of the Arctic Fisheries Working Group. Bergen, Norway, 24 April – 3 May 2001. ICES CM 2001/ACFM:19. 380 pp.

ICES 2003. Study Group on Biological Reference Points for Northeast Arctic Cod. Svanhovd, Norway 13-17 January 2003. ICES CM 2003/ACFM:11.

ICES. 2015. Report of the Benchmark Workshop on Arctic Stocks (WKARCT), 26-30 January 2015, ICES Headquarters, Denmark. ICES CM 2015\ACOM:31. 126 pp.

ICES 2015. Report of the first Workshop on Management Plan Evaluation on Northeast Arctic cod and haddock and Barents Sea capelin ( WKNEAMP-1) , , . ICES CM 2015/ACOM:60, 27 pp.

ICES 2016. Report of the second Workshop on Management Plan Evaluation on Northeast Arctic cod and haddock and Barents Sea capelin (WKNEAMP-2) , 25-28 January 2016, Kirkenes, Norway. ICES CM 2016/ACOM:47, 76 pp.

ICES. 2021. Benchmark Workshop for Barents Sea and Faroese Stocks (WKBARFAR 2021). ICES Scientific Reports. 3:21. 205 pp. https://doi.org/10.17895/ices.pub.7920

ICES. 2021. Arctic Fisheries Working Group (AFWG). ICES Scientific Reports 3:58. 817 pp. https://doi.org/10.17895/ices.pub.8196

ICES. 2023. Arctic Fisheries Working Group (AFWG). ICES Scientific Reports

Jakobsen, T., Korsbrekke, K., Mehl, S., and Nakken, O. 1997. Norwegian combined acoustic and bottom trawl surveys for demersal fish in the Barents Sea during winter. ICES CM 1997/Y:17.

Korsbrekke, K. 1997. Norwegian acoustic survey of Northeast Arctic cod on the spawning grounds off Lofoten. ICES C.M 1997/Y:18.

Korsbrekke, K. 2023. Some observations of Northeast Arctic cod spawning north of Lofoten Islands. WD 03, JRN-AFWG 2023.

Kovalev, Y., Prozorkevich, D., and Chetyrkin, A. 2017. Estimation of Ecosystem survey 2016 index in situation of not full area coverage. Working Document No. 12 to the Arctic Fisheries Working Group, Copenhagen, 18-25 April 2017.

Kovalev, Y., and Chetyrkin, A. 2019. What does NEA cod want for prediction - Fsq or TAC constrain? Working Document No. 11 to the Arctic Fisheries Working Group. ICES. 2019. Arctic Fisheries Working Group (AFWG). ICES Scientific Reports. 1:30. 934 pp.

Mehl, S., and Yaragina, N. A. 1992. Methods and results in the joint PINRO-IMR stomach sampling program. In: Bogstad, B. and Tjelmeland, S. (eds.), Interrelations between fish populations in the Barents Sea. Proceedings of the fifth PINRO-IMR Symposium. Murmansk, 12–16 August 1991. Institute of Marine Research, Bergen, Norway, 5–15.

Nedreaas, K. H. and Otterå, H. 2023. Effort and catch-per-unit-effort (CPUE) for Norwegian trawlers fishing cod north of 67˚N in 2011-2022

Sokolov A., Russkikh A., Kharlin S., Kovalev Yu. A., and Yaragina N.A. 2018. Results of the Russian trawl-acoustic survey on cod and haddock in the Barents Sea and adjacent waters in October-December 2017. Working Document no. 11. ICES Arctic Fisheries Working Group, ICES CM 2018/ACOM:06.

Thygesen, U. H., Albertsen, C. M., Berg, C. W., Kristensen, K., and Nielsen, A. 2017. Validation of ecological state space models using the Laplace approximation Environmental and Ecological Statistics 24 (2): 317-339.

van der Meeren, G. and Prozorkevitch, D. (eds.) 2023. Survey report from the joint Norwegian/Russian Ecosystem Survey in the Barents Sea and the adjacent waters August- December 2022 . IMR/PINRO-report series x/2023 (in prep.)

WD 15. 2019. Updated mean ratios between the combined and Norwegian data on weight at age and maturity at age in Northeast Arctic cod. Working document no 15, AFWG 2019.

Yaragina N.A. Nedreaas K.H., Koloskova V., Mjanger H., Senneset H., Zuykova N. and Ǻgotnes P. 2009. Fifteen years of annual Norwegian-Russian cod comparative age readings. Marine Biology Research 5(1): 54-65.

Yaragina N. A., Kovalev Yu. A., and Chetyrkin A. 2018. Extrapolating predation mortalities back in time: an example from North-east Arctic cod cannibalism, Marine Biology Research: https://doi.org/10.1080/17451000.2017.1396342

Zuykova N.V., Koloskova V.P., Mjanger H., Nedreaas K.H., Senneset H., Yaragina N.A., Ågotnes P., and Aanes S. 2009. Age determination of Northeast Arctic cod otoliths through 50 years of history. Marine Biology Research 5(1): 66-74.

Zuykova N.V., et al. 2020. Report on the meeting between Norwegian and Russian age reading specialists at Polar Branch of FSBSI “VNIRO” Murmansk, 20-24 May 2019. Working document no 8 in: ICES. 2020c.Arctic Fisheries Working Group (AFWG). ICES Scientific Reports. 2:52. 577 pp. http://doi.org/10.17895/ices.pub.6050 .

Year Subarea 1 Division 2.a Division 2.b Unreported catches Total catch
1961 409 694 153 019 220 508   783 221
1962 548 621 139 848 220 797   909 266
1963 547 469 117 100 111 768   776 337
1964 206 883 104 698 126 114   437 695
1965 241 489 100 011 103 430   444 983
1966 292 253 134 805 56 653   483 711
1967 322 798 128 747 121 060   572 605
1968 642 452 162 472 269 254   1 074 084
1969 679 373 255 599 262 254   1 197 226
1970 603 855 243 835 85 556   933 246
1971 312 505 319 623 56 920   689 048
1972 197 015 335 257 32 982   565 254
1973 492 716 211 762 88 207   792 685
1974 723 489 124 214 254 730   1 102 433
1975 561 701 120 276 147 400   829 377
1976 526 685 237 245 103 533   867 463
1977 538 231 257 073 109 997   905 301
1978 418 265 263 157 17 293   698 715
1979 195 166 235 449 9 923   440 538
1980 168 671 199 313 12 450   380 434
1981 137 033 245 167 16 837   399 037
1982 96 576 236 125 31 029   363 730
1983 64 803 200 279 24 910   289 992
1984 54 317 197 573 25 761   277 651
1985 112 605 173 559 21 756   307 920
1986 157 631 202 688 69 794   430 113
1987 146 106 245 387 131 578   523 071
1988 166 649 209 930 58 360   434 939
1989 164 512 149 360 18 609   332 481
1990 62 272 99 465 25 263 25 000 212 000
1991 70 970 156 966 41 222 50 000 319 158
1992 124 219 172 532 86 483 130 000 513 234
1993 195 771 269 383 66 457 50 000 581 611
1994 353 425 306 417 86 244 25 000 771 086
1995 251 448 317 585 170 966   739 999
1996 278 364 297 237 156 627   732 228
1997 273 376 326 689 162 338   762 403
1998 250 815 257 398 84 411   592 624
1999 159 021 216 898 108 991   484 910
2000 137 197 204 167 73 506   414 870
2001 142 628 185 890 97 953   426 471
2002 184 789 189 013 71 242 90 000 535 045
2003 163 109 222 052 51 829 115 000 551 990
2004 177 888 219 261 92 296 117 000 606 445
2005 159 573 194 644 121 059 166 000 641 276
2006 159 851 204 603 104 743 67 100 537 642
2007 152 522 195 383 97 891 41 087 486 883
2008 144 905 203 244 101 022 15 000 464 171
2009 161 602 207 205 154 623   523 431
2010 183 988 271 337 154 657   609 983
2011 198 333 328 598 192 898   719 829
2012 247 938 331087 148 638   727 663
2013 360 673 421678 183 858   966 209
2014 320 347 468 934 197 168   986 449
2015 272405 375328 216651   864384
2016 321347 351468 176607   849422
2017 309902 360477 197898   868276
201 8 249397 321548 207681   778627
201 9 234985 318539 139084   692609
2020 234029 298707 160166   692903
2021 281198 268942 217144   767284
20221 236173 256394 226644   719211
Table 3.1. Northeast Arctic COD. Total catch (t) by fishing areas and unreported catch.

Data provided by Working Group members

1 Provisional figure

Year Advice   TAC CATCH
2018 -   - 441
2019 -   800 628
2020 -   800 522
2021 600   600 146
2022 347   347 276
2023 315      
Table 3.1a Advice, quota and official Norwegian catches (tonnes) in the fishery zone around Jan Mayen (part of ICES area 2a).
Year Norwegian catches of cod removed from the NEAC cod -assessment
v1960–70 38.6
1971–79 no data
1980 40
1981 49
1982 42
1983 38
1984 33
1985 28
1986 26
1987 31
1988 22
1989 17
1990 24
1991 25
1992 35
1993 44
1994 48
1995 39
1996 32
1997 36
1998 29
1999 23
2000 19
2001 14
2002 20
2003 19
2004 14
2005 13
2006 15
2007 13
2008 13
2009 15
2010 13.5
2011 18.8
2012 35.5
2013 30.1
2014 33.6
2015 35.8
2016 54.9
2017 51.0
2018 36.3
2019 40.1
2020 45.3
2021 42.0
2022 40.3
Table 3.2. Catches of Norwegian Coastal Cod in subareas 1 and 2, 1000 tonnes, which are removed from the NEA cod assessment.
    Subarea 1   Division 2.a   Division 2.b  
Year   Trawl Others Trawl Others Trawl Others
1967   238 84.8 38.7 90 121.1 -
1968   588.1 54.4 44.2 118.3 269.2 -
1969   633.5 45.9 119.7 135.9 262.3 -
1970   524.5 79.4 90.5 153.3 85.6 -
1971   253.1 59.4 74.5 245.1 56.9 -
1972   158.1 38.9 49.9 285.4 33 -
1973   459 33.7 39.4 172.4 88.2 -
1974   677 46.5 41 83.2 254.7 -
1975   526.3 35.4 33.7 86.6 147.4 -
1976   466.5 60.2 112.3 124.9 103.5 -
1977   471.5 66.7 100.9 156.2 110 -
1978   360.4 57.9 117 146.2 17.3 -
1979   161.5 33.7 114.9 120.5 8.1 -
1980   133.3 35.4 83.7 115.6 12.5 -
1981   91.5 45.1 77.2 167.9 17.2 -
1982   44.8 51.8 65.1 171 21 -
1983   36.6 28.2 56.6 143.7 24.9 -
1984   24.5 29.8 46.9 150.7 25.6 -
1985   72.4 40.2 60.7 112.8 21.5 -
1986   109.5 48.1 116.3 86.4 69.8 -
1987   126.3 19.8 167.9 77.5 129.9 1.7
1988   149.1 17.6 122 88 58.2 0.2
1989   144.4 19.5 68.9 81.2 19.1 0.1
1990   51.4 10.9 47.4 52.1 24.5 0.8
1991   58.9 12.1 73 84 40 1.2
1992   103.7 20.5 79.7 92.8 85.6 0.9
1993   165.1 30.7 155.5 113.9 66.3 0.2
1994   312.1 41.3 165.8 140.6 84.3 1.9
1995   218.1 33.3 174.3 143.3 160.3 10.7
1996   248.9 32.7 137.1 159 147.7 6.8
1997   235.6 37.7 150.5 176.2 154.7 7.6
1998   219.8 31 127 130.4 82.7 1.7
1999   133.3 25.7 101.9 115 107.2 1.8
2000   111.7 25.5 105.4 98.8 72.2 1.3
2001   119.1 23.5 83.1 102.8 95.4 2.5
2002   147.4 37.4 83.4 105.6 69.9 1.3
2003   146 17.1 107.8 114.2 50.1 1.8
2004   154.4 23.5 100.3 118.9 88.8 3.5
2005   132.4 27.2 87 107.7 115.4 5.6
2006   141.8 18.1 91.2 113.4 100.1 4.6
2007   129.6 22.9 84.8 110.6 91.6 6.3
2008   123.8 21.1 94.8 108.4 95.3 5.7
2009   130.1 31.5 102 105.2 142.1 11.4
2010   151.1 32.9 130 141.4 149.2 5.4
2011   158.1 38.4 163.5 167 181 11.9
2012   212.1 35.9 172.7 158.4 133.8 14.9
2013   308.5 52.2 216.9 204.7 159.7 24.1
2014   268.8 51.5 246.8 222.1 177.9 19.3
2015   224.3 48.1 192.2 183.2 197.7 19.0
2016   285.5 35.8 181.7 169.8 156.3 20.3
2017   265.4 44.5 189.5 171.0 180.0 17.9
201 8   204.7 44.7 156.7 164.9 192.0 15.6
201 9   199.4 35.6 177.8 140.7 128.9 10.1
2020   199.4 34.6 157.2 141.5 153.5 6.7
2021   220.8 60.4 120.2 148.7 202.1 15.1
2022 1 192.9 43.3 108.9 147.4 212.9 13.7
Table 3.3. Northeast Arctic COD. Total nominal catch ('000 t) by trawl and other gear for each

Data provided by Working Group members

1 Provisional figures

Year Faroe Islands France German Dem.Rep. Fed.Rep. Germany Greenland Iceland Norway Poland United Kingdom Russia** Spain Others Total
1961 3934 13755 3921 8129     268377 -   158113 325780   1212 783221
1962 3109 20482 1532 6503     225615 -   175020 476760   245 909266
1963 - 18318 129 4223     205056 108   129779 417964   - 775577
1964 - 8634 297 3202     149878 -   94549 180550   585 437695
1965 - 526 91 3670     197085 -   89962 152780   816 444930
1966 - 2967 228 4284     203792 -   103012 169300   121 483704
1967 - 664 45 3632     218910 -   87008 262340   6 572605
1968 - - 225 1073     255611 -   140387 676758   - 1074084
1969 29374 - 5907 5543     305241 7856   231066 612215   133 1197226
1970 26265 44245 12413 9451     377606 5153   181481 276632   - 933246
1971 5877 34772 4998 9726     407044 1512   80102 144802   215 689048
1972 1393 8915 1300 3405     394181 892   58382 96653   166 565287
1973 1916 17028 4684 16751     285184 843   78808 387196   276 792686
1974 5717 46028 4860 78507     287276 9898   90894 540801   38453 1102434
1975 11309 28734 9981 30037     277099 7435   101843 343580   19368 829377
1976 11511 20941 8946 24369     344502 6986   89061 343057   18090 867463
1977 9167 15414 3463 12763     388982 1084   86781 369876   17771 905301
1978 9092 9394 3029 5434     363088 566   35449 267138   5525 698715
1979 6320 3046 547 2513     294821 15   17991 105846   9439 440538
1980 9981 1705 233 1921     232242 3   10366 115194   8789 380434
1981 12825 3106 298 2228     277818     5262 83000 14500 - 399037
1982 11998 761 302 1717     287525     6601 40311 14515 - 363730
1983 11106 126 473 1243     234000     5840 22975 14229 - 289992
1984 10674 11 686 1010     230743     3663 22256 8608 - 277651
1985 13418 23 1019 4395     211065     3335 62489 7846 4330 307920
1986 18667 591 1543 10092     232096     7581 150541 5497 3505 430113
1987 15036 1 986 7035     268004     10957 202314 16223 2515 523071
1988 15329 2551 605 2803     223412     8107 169365 10905 1862 434939
1989 15625 3231 326 3291     158684     7056 134593 7802 1273 332481
1990 9584 592 169 1437     88737     3412 74609 7950 510 187000
1991 8981 975   2613     126226     3981 119427*** 3677 3278 269158
1992 11663 2   3911 3337   168460     6120 182315 6217 1209 383234
1993 17435 3572   5887 5389 9374 221051     11336 244860 8800 3907 531611
1994 22826 1962   8283 6882 36737 318395     15579 291925 14929 28568 746086
1995 22262 4912   7428 7462 34214 319987     16329 296158 15505 15742 739999
1996 17758 5352   8326 6529 23005 319158     16061 305317 15871 14851 732228
1997 20076 5353   6680 6426 4200 357825     18066 313344 17130 13303 762403
1998 14290 1197   3841 6388 1423 284647     14294 244115 14212 8217 592624
1999 13700 2137   3019 4093 1985 223390     11315 210379 8994 5898 484910
2000 13350 2621   3513 5787 7562 192860     9165 166202 8695 5115 414870
2001 12500 2681   4524 5727 5917 188431     8698 183572 9196 5225 426471
2002 15693 2934   4517 6419 5975 202559     8977 184072 8414 5484 445045
2003 19427 2921   4732 7026 5963 191977     8711 182160 7924 6149 436990
2004 19226 3621   6187 8196 7201 212117     14004 201525 11285 6082 489445
2005 16273 3491   5848 8135 5874 207825     10744 200077 9349 7660 475276
2006 16327 4376   3837 8164 5972 201987     10594 203782 9219 6271 470527
2007 14788 3190   4619 5951 7316 199809     9298 186229 9496 5101 445796
2008 15812 3149   4955 5617 7535 196598     8287 190225 9658 7336 449171
2009 16905 3908   8585 4977 7380 224298     8632 229291 12013 7442 523431
2010 15977 4499   8442 6584 11299 264701     9091 267547 12657 9185 609983
2011 13429 1173   4621 7155 12734 331535     8210 310326 13291 17354^ 719829
2012 17523 2841   8500 8520 9536 315739     11166 329943 12814 11081 727663
2013 13833 7858   8010 7885 14734 438734     12536 432314 15042 15263 966209
2014 33298 8149   6225 10864 18205 431846     14762 433479 16378 13243 986449
2015 26568 7480   6427 7055 16120 377983     11778 381778 19905 9880 864384
2016 24084 7946   6336 8607 16031 348949     13583 394107 14640 15139 849422
2017 28637 9554   5977 13638 11925 357419     16731 396180 14414 13802 868276
2018 26152 6605   9768 12743 10708 333539     11533 340364 13143 14071 778627
2019 22270 6371   8470 7553 12294 282120     11214 316813 13939 11565 692609
2020 21679 5796   9725 7391 9734 289472     12113 312683 11403 12908 692903
2021 21767 4459   6190 8246 8933 337931     5426 352064 11080 11188 767284^^
2022* 21530 4988   7134 7688 6214 310145     7024 333697 12214 8577 719211^^
Table 3.4. Northeast Arctic COD. Nominal catch(t) by countries. (Subarea 1 and divisions 2a and 2b combined, data provided by Working group members

* Provisional figures
** USSR prior to 1991.
*** Includes Baltic countries.
^ Includes unspecified EU catches.
^^ In 2022 and 2023 assessment and advice was carried out by the Joint Russian-Norwegian working group on Arctic Fisheries (JRN-AFWG) which compiled catches for 2021 and 2022 and gave advice for 2023 and 2024.

Year Area covered Additional area implied in adjustment Adjustment method
1981-92 88.1    
1993 137.6    
1994 161.1    
199 5 191.9    
1996 166.1    
1997 88.4 56.2 Index ratio by age
1998 100.4 51.1 Index ratio by age
1999 118.5    
2000 163.2    
2001 164.7    
2002 157.4    
2003 147.4    
2004 164.4    
2005 179.9    
2006 170.1 18.1 Partly covered strata raised to full strata area
2007 123.9 56.7 Index ratio by age
2008 165.2    
2009 171.8    
2010 160.5    
2011 174.3    
2012 151.3 16.7 Index ratio by age
2013 20 3.6    
2014 2 66.8    
2015 243.3    
2016 228.0    
2017 184.4 37.5 Index ratio by age
2018 236.3    
2019 241.2    
2020 203.2 25.1 Index ratio by age
2021 232.0 10.9 Index ratio by age
2022 232.7    
2023 253.3    
Table 3.5. Barents Sea winter survey. Area covered (‘000 square nautical miles) and areas implied in the method used to adjust for missing coverage in Russian Economic Zone (REZ). “Index ratio by age” means that the index by age (for the area outside REZ) was scaled by the observed ratio between total index and the index outside REZ observed in the years prior to the survey.

 

Table 3.6. Northeast Arctic cod. Catch numbers-at-age (Thous) SAM Wed May 31 08:24:02 2023
Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp  
1946 4008 10387 18906 16596 13843 15370 59845 22618 10093 9573 5460 1927 750  
1947 710 13192 43890 52017 45501 13075 19718 47678 31392 9348 9330 4622 4103  
1948 140 3872 31054 55983 77375 21482 15237 9815 30041 7945 4491 3899 4205  
1949 991 6808 35214 100497 83283 29727 13207 5606 8617 13154 3657 1895 2167  
1950 1281 10954 29045 45233 62579 30037 19481 9172 6019 4133 6750 1662 1450  
1951 24687 77924 64013 46867 37535 33673 23510 10589 4221 1288 1002 3322 611  
1952 24099 120704 113203 73827 49389 20562 24367 15651 8327 3565 647 467 1044  
1953 47413 107659 112040 55500 22742 16863 10559 10553 5637 1752 468 173 156  
1954 11473 155171 146395 100751 40635 10713 11791 8557 6751 2370 896 268 123  
1955 3902 37652 201834 161336 84031 30451 13713 9481 4140 2406 867 355 128  
1956 10614 24172 129803 250472 86784 51091 14987 7465 3952 1655 1292 448 166  
1957 17321 33931 27182 70702 87033 39213 17747 6219 3232 1220 347 299 173  
1958 31219 133576 71051 40737 38380 35786 13338 10475 3289 1070 252 40 141  
1959 32308 77942 148285 53480 18498 17735 23118 9483 3748 997 254 161 98  
1960 37882 97865 64222 67425 23117 8429 7240 11675 4504 1843 354 102 226  
1961 45478 132655 123458 51167 38740 17376 5791 6778 5560 1682 910 280 108  
1962 42416 170566 167241 89460 28297 21996 7956 2728 2603 1647 392 280 103  
1963 13196 106984 205549 95498 35518 16221 11894 3884 1021 1025 498 129 157  
1964 5298 45912 97950 58575 19642 9162 6196 3553 783 172 387 264 131  
1965 15725 25999 78299 68511 25444 8438 3569 1467 1161 131 61 79 197  
1966 55937 55644 34676 42539 37169 18500 5077 1495 380 403 77 9 70  
1967 34467 160048 69235 22061 26295 25139 11323 2329 687 316 225 40 14  
1968 3709 174585 267961 107051 26701 16399 11597 3657 657 122 124 70 46  
1969 2307 24545 238511 181239 79363 26989 13463 5092 1913 414 121 23 46  
1970 7164 10792 25813 137829 96420 31920 8933 3249 1232 260 106 39 35  
1971 7754 13739 11831 9527 59290 52003 12093 2434 762 418 149 42 25  
1972 35536 45431 26832 12089 7918 34885 22315 4572 1215 353 315 121 40  
1973 294262 131493 61000 20569 7248 8328 19130 4499 677 195 81 59 55  
1974 91855 437377 203772 47006 12630 4370 2523 5607 2127 322 151 83 62  
1975 45282 59798 226646 118567 29522 9353 2617 1555 1928 575 231 15 37  
1976 85337 114341 79993 118236 47872 13962 4051 936 558 442 139 26 53  
1977 39594 168609 136335 52925 61821 23338 5659 1521 610 271 122 92 54  
1978 78822 45400 88495 56823 25407 31821 9408 1227 913 446 748 48 51  
1979 8600 77484 43677 31943 16815 8274 10974 1785 427 103 59 38 45  
1980 3911 17086 81986 40061 17664 7442 3508 3196 678 79 24 26 8  
1981 3407 9466 20803 63433 21788 9933 4267 1311 882 109 37 3 1  
1982 8948 20933 19345 28084 42496 8395 2878 708 271 260 27 5 5  
1983 3108 19594 20473 17656 17004 18329 2545 646 229 74 58 20 5  
1984 6942 14240 18807 20086 15145 8287 5988 783 232 153 49 12 8  
1985 24634 45769 27806 19418 11369 3747 1557 768 137 36 31 32 8  
1986 28968 70993 78672 25215 11711 4063 976 726 557 136 28 34 14  
1987 13648 137106 98210 61407 13707 3866 910 455 187 227 21 59 20  
1988 9828 22774 135347 54379 21015 3304 1236 519 106 69 43 14 5  
1989 5085 17313 32165 81756 27854 5501 827 290 41 13 1 11 16  
1990 1911 7551 12999 17827 30007 6810 828 179 59 15 6 5 2  
1991 4963 10933 16467 20342 19479 25193 3888 428 48 12 1 1 2  
1992 21835 36015 27494 23392 18351 13541 18321 2529 264 82 3 9 1  
1993 10094 46182 63578 33623 14866 9449 6571 12593 1749 377 63 22 1  
1994 6531 59444 102548 59766 32504 10019 6163 3671 7528 995 121 19 4  
1995 4879 42587 115329 98485 32036 7334 3014 1725 1174 1920 222 41 1  
1996 7655 28782 80711 100509 54590 10545 2023 930 462 230 809 84 1  
1997 12827 36491 69633 83017 65768 28392 4651 1151 373 213 144 238 1  
1998 31887 88874 48972 40493 34513 26354 6583 965 197 69 42 22 53  
1999 7501 77714 92816 31139 15778 15851 8828 1837 195 40 34 8 30  
2000 4701 33094 93044 47210 12671 6677 4787 1647 321 71 11 1 14  
2001 5044 35019 62139 62456 22794 5266 1773 1163 343 85 6 7 22  
2002 2348 31033 76175 67656 42122 11527 1801 529 223 120 21 9 6  
2003 7263 20885 64447 71109 36706 14002 2887 492 142 97 21 43 1  
2004 2090 38226 50826 68350 50838 18118 6239 1746 295 127 39 16 8  
2005 5815 19768 113144 61665 44777 20553 6285 2348 562 100 21 24 7  
2006 8548 47207 33625 78150 31770 15667 7245 1788 737 210 26 45 155  
2007 25473 43817 62877 26303 34392 11240 4080 1381 505 285 44 13 35  
2008 8459 51704 40656 35072 14037 20676 5503 1794 715 229 42 26 13  
2009 4866 38711 83998 46639 20789 8417 8920 1957 872 987 76 21 20  
2010 1778 16193 53855 75853 36797 17062 4784 4325 3034 913 189 49 35  
2011 1418 8033 32472 70938 73875 21116 11708 5058 3237 600 434 12 0  
2012 2695 10462 16646 40372 70014 48315 12326 5214 1926 1124 317 70 24  
2013 2903 13659 22752 21020 54231 74451 47124 9143 2963 694 449 89 145  
2014 5234 19226 38407 36633 29901 56109 47540 22738 3717 1169 313 210 157  
2015 4315 31383 41181 51209 33745 22530 23609 24553 16071 2510 468 134 254  
2016 2076 11291 50231 43609 35265 23417 14592 20105 15862 4781 871 249 308  
2017 6535 13128 28365 66504 46136 28507 15307 10073 12169 6465 1927 399 285  
2018 6120 28569 27128 33816 54328 28323 16208 9722 7132 3740 2295 840 271  
2019 4389 21405 48422 29849 26548 39759 17395 8883 4606 2109 715 564 322  
2020 3992 22446 37649 52454 31009 20904 23618 11768 6130 1572 591 310 278  
2021 2983 17935 54005 59732 59136 22397 14744 13589 4919 1737 678 228 344  
2022 5725 23486 53467 68112 47067 30569 11776 6046 3797 1489 575 164 107  
Norway                          
Year     Age                      
  2 3 4 5 6 7 8 9 10 11 12 13 14 15+
1983 0.41 0.82 1.32 2.05 2.82 3.94 5.53 7.70 9.17 11.46 16.59 16.42 16.96 24.46
1984 1.16 1.47 1.97 2.53 3.13 3.82 4.81 5.95 7.19 7.86 8.46 7.99 9.78 10.64
1985 0.34 0.99 1.43 2.14 3.27 4.68 6.05 7.73 9.86 11.87 14.16 14.17 13.52 15.33
1986 0.30 0.67 1.34 2.04 3.14 4.60 5.78 6.70 7.52 9.74 10.68 12.86 9.59 16.31
1987 0.24 0.48 0.88 1.66 2.72 4.35 6.21 8.78 9.78 12.50 13.75 15.12 10.43 19.95
1988 0.36 0.56 0.83 1.31 2.34 3.84 6.50 8.76 9.97 11.06 14.43 19.02 12.89 10.16
1989 0.53 0.75 0.90 1.17 1.95 3.20 4.88 7.82 9.40 11.52 11.47   19.47 14.68
1990 0.40 0.81 1.22 1.59 2.14 3.29 4.99 7.83 10.54 14.21 17.63 7.97 14.64  
1991 0.63 1.37 1.77 2.31 3.01 3.68 4.63 6.06 8.98 12.89 17.00   14.17 16.63
1992 0.41 1.10 1.79 2.45 3.22 4.33 5.27 6.21 8.10 10.51 11.59   15.81 6.52
1993 0.30 0.83 1.70 2.41 3.35 4.27 5.45 6.28 7.10 7.82 10.10 16.03 19.51 17.68
1994 0.30 0.82 1.37 2.23 3.35 4.27 5.56 6.86 7.45 7.98 9.53 12.16 11.45 19.79
1995 0.44 0.78 1.26 1.87 2.80 4.12 5.15 5.96 7.90 8.67 9.20 11.53 17.77 21.11
1996 0.29 0.90 1.15 1.67 2.58 4.08 6.04 6.62 7.96 9.36 10.55 11.41 9.51 24.24
1997 0.35 0.78 1.14 1.56 2.25 3.48 5.35 7.38 7.55 8.30 11.15 8.64 12.80  
1998 0.38 0.68 1.03 1.64 2.23 3.24 4.85 6.88 9.18 9.84 15.78 14.37 13.77 15.58
1999 0.46 0.88 1.16 1.65 2.40 3.12 4.26 6.00 6.52 10.64 14.05 12.67 9.20 17.22
2000 0.31 0.65 1.23 1.80 2.54 3.58 4.49 5.71 7.54 7.86 12.71 14.71 15.40 20.26
2001 0.30 0.77 1.18 1.83 2.75 3.64 4.88 5.93 7.43 8.90 10.22 11.11 13.03 18.85
2002 0.31 0.90 1.40 1.90 2.60 3.55 4.60 5.80 7.40 9.56 8.71 12.92 8.42 17.61
2003 0.55 0.88 1.39 2.01 2.63 3.59 4.83 5.57 7.262 9.36 9.52 9.52 10.68 21.66
2004 0.54 1.08 1.41 1.95 2.69 3.46 4.77 6.72 7.90 8.66 12.21 14.02 16.50 11.37
2005 0.58 0.92 1.38 1.86 2.61 3.54 4.57 6.41 8.24 9.89 11.04 14.08 11.81 20.08
2006 0.51 0.97 1.45 2.06 2.71 3.56 4.57 5.53 6.61 7.53 8.55 8.44 9.82 12.31
2007 0.53 1.07 1.70 2.37 3.26 4.36 5.45 6.71 8.08 8.56 9.75 11.72 12.72 15.58
2008 0.65 1.12 1.70 2.44 3.32 4.41 5.61 6.84 8.25 9.31 10.54 12.45 13.59 21.15
2009 0.56 0.98 1.47 2.10 2.83 3.90 5.06 5.76 7.31 7.79 7.81 10.68 11.83 14.76
2010 0.55 0.95 1.46 2.06 2.93 4.02 5.40 6.44 7.19 8.43 9.11 10.46 11.39 15.55
2011 0.53 1.09 1.50 2.06 2.85 3.70 5.01 6.26 7.33 8.34 9.87 13.23    
2012   0.83 1.32 1.92 2.65 3.52 4.71 6.34 8.11 9.92 11.31 13.45 15.75  
2013 0.43 0.95 1.40 2.00 2.64 3.44 4.51 5.67 7.29 8.80 10.33 11.38 12.56  
2014 0.59 1.07 1.55 2.15 2.80 3.70 4.57 5.78 6.97 8.35 9.46 10.99 12.28 15.49
2015 0.64 0.96 1.42 1.96 2.57 3.30 4.13 5.49 6.46 7.18 8.63 10.37 12.24 14.60
2016 0.59 0.96 1.46 1.99 2.71 3.57 4.56 5.78 6.82 8.08 9.33 10.01 11.68 14.79
2017 0.55 0.99 1.53 2.06 2.69 3.64 4.72 5.91 6.91 7.88 9.41 10.93 11.78 15.07
2018 0.62 1.05 1.51 2.11 2.80 3.48 4.54 5.80 6.97 7.64 9.11 10.29 11.35 14.05
201 9 0.51 0.96 1.43 2.02 2.72 3.60 4.51 5.80 6.91 7.94 8.89 10.94 11.55 14.49
2020 0.58 0.94 1.42 2.01 2.66 3.50 4.59 5.77 7.03 8.46 9.78 10.97 12.74 16.08
2021 0.39 0.75 1.27 1.86 2.55 3.42 4.52 5.86 7.13 8.55 10.09 11.79 12.98 15.75
2022 0.32 0.71 1.15 1.73 2.42 3.36 4.47 5.79 7.18 8.65 10.09 11.45 12.93 16.43
Table 3.7. Northeast Arctic COD. Weights-at-age (kg) in landings from various countries
Russia (trawl only)                          
Year       Age                      
    2 3 4 5 6 7 8 9 10 11 12 13 14 15+
1983   0.65 1.05 1.58 2.31 3.39 4.87 6.86 8.72 10.40 12.07 14.43      
1984   0.53 0.88 1.45 2.22 3.21 4.73 6.05 8.43 10.34 12.61 14.95      
1985   0.33 0.77 1.31 1.84 2.96 4.17 5.94 6.38 8.58 10.28        
1986   0.29 0.61 1.14 1.75 2.45 4.17 6.18 8.04 9.48 11.33 12.35 14.13    
1987   0.24 0.52 0.88 1.42 2.07 2.96 5.07 7.56 8.93 10.80 13.05 18.16    
1988   0.27 0.49 0.88 1.32 2.06 3.02 4.40 6.91 9.15 11.65 12.53 14.68    
1989   0.50 0.73 1.00 1.39 1.88 2.67 4.06 6.09 7.76 9.88        
1990   0.45 0.83 1.21 1.70 2.27 3.16 4.35 6.25 8.73 10.85 13.52      
1991   0.36 0.64 1.05 2.03 2.85 3.77 4.92 6.13 8.36 10.44 15.84 19.33    
1992   0.55 1.20 1.44 2.07 3.04 4.24 5.14 5.97 7.25 9.28 11.36      
1993   0.48 0.78 1.39 2.06 2.62 4.07 5.72 6.79 7.59 11.26 14.79 17.71    
1994   0.41 0.81 1.24 1.80 2.55 2.88 4.96 6.91 8.12 10.28 12.42 16.93    
1995   0.37 0.77 1.21 1.74 2.37 3.40 4.71 6.73 8.47 9.58 12.03 16.99    
1996   0.30 0.64 1.09 1.60 2.37 3.42 5.30 7.86 8.86 10.87 11.80      
1997   0.30 0.57 1.00 1.52 2.18 3.30 4.94 7.15 10.08 11.87 13.54      
1998   0.33 0.68 1.06 1.60 2.34 3.39 5.03 6.89 10.76 12.39 13.61 14.72    
1999   0.24 0.58 0.98 1.41 2.17 3.26 4.42 5.70 7.27 10.24 14.12      
2000   0.18 0.48 0.85 1.44 2.16 3.12 4.44 5.79 7.49 9.66 10.36      
2001   0.12 0.31 0.62 1.00 1.53 2.30 3.31 4.57 6.55 8.11 9.52 11.99    
2002   0.20 0.60 1.05 1.46 2.14 3.27 4.47 6.23 8.37 10.06 12.37      
2003   0.23 0.63 1.06 1.78 2.40 3.41 4.86 6.28 7.55 11.10 13.41 12.12 14.51  
2004   0.30 0.57 1.09 1.55 2.37 3.20 4.73 6.92 8.41 9.77 11.08      
2005   0.33 0.65 0.98 1.50 2.10 3.08 4.31 5.81 8.42 10.37 13.56 14.13    
2006   0.27 0.68 1.05 1.49 2.25 3.16 4.54 5.90 8.59 10.31 12.31      
2007   0.23 0.67 1.12 1.66 2.25 3.31 4.57 6.27 8.20 10.02 12.36 12.42    
2008   0.28 0.64 1.16 1.74 2.65 3.58 4.74 5.73 7.32 8.07 9.52 12.52    
2009   0.31 0.64 1.09 1.58 2.11 3.19 4.80 6.58 7.97 9.84 11.51      
2010   0.25 0.57 1.00 1.64 2.28 3.14 4.53 5.98 8.03 9.71 10.70 13.53    
2011   0.25 0.62 1.05 1.56 2.18 2.95 4.33 6.21 8.04 10.13 12.25 15.18    
2012   0.29 0.60 1.07 1.66 2.25 2.95 4.17 6.23 8.58 11.08 12.24 14.07 15.22 16.39
2013   0.33 0.63 1.05 1.54 2.26 3.09 4.08 5.47 7.37 9.59 12.57 15.54 17.05  
2014   0.32 0.61 1.05 1.61 2.26 3.15 4.00 5.24 7.13 9.46 11.18 14.47    
2015   0.30 0.60 0.97 1.49 2.11 3.13 4.64 5.78 7.13 9.53 12.12 16.71 17.37  
2016   0.26 0.55 0.97 1.53 2.20 3.19 4.50 6.12 7.97 9.55 10.95 14.35 14.74 17.25
2017   0.33 0.63 1.03 1.56 2.24 3.24 4.67 6.34 7.74 9.40 11.12 14.43 16.67 11.91
2018   0.33 0.68 1.06 1.62 2.40 3.22 4.66 6.23 7.79 8.91 10.26 11.26 13.41 10.14
2019   0.29 0.62 1.10 1.60 2.33 3.22 4.44 6.45 8.10 9.60 11.02 13.83 10.65 10.65
2020   0.27 0.47 0.93 1.44 2.05 2.95 4.28 5.73 7.59 8.45 10.66 12.26 12.18 12.23
2021   0.19 0.44 0.76 1.35 2.02 2.81 4.25 6.26 7.81 9.59 10.67 10.86 13.62 12.31
2022   0.39 0.62 0.91 1.42 2.21 3.22 4.45 6.15 8.16 9.91 10.83 11.96   10.33
Table 3.7. Northeast Arctic COD. Weights-at-age (kg) in landings from various countries (continued)
Germany (Division IIa and IIb)                      
Year       Age                      
    2 3 4 5 6 7 8 9 10 11 12 13 14 15+
1994     0.68 1.04 2.24 3.49 4.51 5.79 6.93 8.16 8.46 8.74 9.48 15.25  
1995     0.44 0.84 1.5 2.72 3.81 4.46 4.81 7.37 7.69 8.25 9.47    
1996     0.84 1.15 1.64 2.53 3.58 4.13 3.9 4.68 6.98 6.43 11.32    
1997     0.43 0.92 1.42 2.01 3.15 4.04 5.16 4.82 3.96 7.04 8.8    
1998   0.23 0.73 1.17 1.89 2.72 3.25 4.13 5.63 6.5 8.57 8.42 11.45 8.79  
1999 1   0.853 1.448 1.998 2.65 3.473 4.156 5.447 6.82 5.902   8.01    
2000 2 0.26 0.73 1.36 2.04 2.87 3.67 4.88 5.78 7.05 8.45 8.67 9.33 6.88  
2001   0.38 0.80 1.21 1.90 2.74 3.90 4.99 5.69 7.15 7.32 11.72 9.11 6.60  
2002   0.35 1.00 1.31 1.80 2.53 3.64 4.38 5.07 6.82 9.21 7.59 13.18 19.17 19.20
2003   0.22 0.44 1.04 1.71 2.31 3.27 4.93 6.17 7.77 9.61 9.99 12.29 13.59  
2004 2 0.22 0.73 1.01 1.75 2.58 3.33 4.73 6.32 7.20 8.45 9.20 11.99 10.14 13.11
2005 3 0.57 0.77 1.13 1.66 2.33 3.36 4.38 5.92 6.65 7.26 10.01 11.14    
2006 2 0.71 0.91 1.39 1.88 2.56 3.77 5.33 6.68 9.14 10.89 11.51 16.83 18.77  
2007 3 0.59 1.35 1.79 2.51 3.53 4.00 4.95 6.55 7.54 9.71 11.40 11.57 23.34 15.61
2008 3 0.23 0.51 1.14 1.76 2.57 3.15 4.40 5.43 7.18 8.39 10.15 10.03 10.99 14.26
2009 3 0.35 0.60 1.19 1.83 2.96 4.08 5.61 6.97 8.55 9.13 10.54 13.34 10.30 17.06
2010 3 0.36 0.67 0.93 1.71 2.46 3.21 4.93 6.75 7.80 8.70 8.53 10.17 12.36 14.11
2011 1     1.75 3.09 3.30 3.28 4.13 4.99 6.61 7.91 9.38 10.79 14.67 14.91
2013 3     1.03 1.37 1.87 2.65 3.45 4.49 7.26 11.42 12.86 13.07    
2014 4   0.68 0.96 1.39 1.69 3.06 4.07 5.65 8.15 10.36 13.07 13.52    
2015 4 0.82 1.05 1.67 2.33 3.56 4.50 5.41 6.20 6.39          
2016 1   1.38 2.60 3.55 4.81 6.33 7.61 8.90 9.26 10.83 13.41 16.84 17.03 17.76
2017 1   1.58 2.79 3.93 3.93 4.77 6.35 8.16 9.09 10.39 11.24 12.48 14.39 13.04
2018 3 0.58 1.16 1.76 2.45 3.34 4.13 5.81 7.16 8.99 9.96 10.85 11.73 14.01 17.79
2019 1   0.82 1.37 1.80 2.26 3.49 4.45 5.44 7.08 9.25 9.39 13.30 12.24 15.25
2020 5     1.6 1.63 2.48 3.13 5.01 5.93 8.36 9.31 12.16 12.96 12.77 14.08
2021 2   0.68 1.3 1.52 2.25 3.22 4.58 6.49 7.43 10.37 11.73 14.64 14.34 15.74
2022 1   0.59 0.82 1.40 2.20 3.04 4.13 5.54 7.36 8.56 10.79 13.12 14.96 15.18
1 Division IIa only                        
2 IIa and IIb combined                      
3 I,IIa and IIb combined                      
4 Division II b only                      
5 I and IIa combined                      
                         
Table 3.7. Northeast Arctic COD. Weights-at-age (kg) in landings from various countries (continued)
                         
Spain (Division IIb)                          
Year       Age                      
    2 3 4 5 6 7 8 9 10 11 12 13 14 15+
1994   0.43 1.08 1.38 2.32 2.47 2.68 3.46 5.20 7.04 6.79 7.20 8.04 10.46 15.35
1995   0.42 0.51 0.98 1.99 3.41 4.95 5.52 8.62 9.21 11.42 9.78 8.08    
1996     0.66 1.12 1.57 2.43 3.17 3.59 4.44 5.48 6.79 8.10      
1997 1 0.51 0.65 1.22 1.68 2.60 3.39 4.27 6.67 7.88 11.34 13.33 10.03 8.69  
1998   0.47 0.74 1.15 1.82 2.44 3.32 3.71 5.00 7.26          
1999 1 0.21 0.69 1.06 1.69 2.50 3.32 4.72 5.76 6.77 7.24 7.63      
2000 1 0.23 0.61 1.24 1.75 2.47 3.12 4.65 6.06 7.66 10.94 11.40 7.20    
2001   0.23 0.64 1.25 1.95 2.86 3.55 4.95 6.46 8.50 11.07 13.09      
2002   0.16 0.55 1.00 1.48 2.17 3.29 4.47 5.35 8.29 12.23 9.01 12.16 15.2  
2003     0.58 1.05 1.70 2.33 3.33 4.92 6.24 9.98 13.07 14.74 14.17    
2004 1 0.31 0.56 0.80 1.28 1.96 2.59 3.72 5.36 5.28 7.41   11.43    
2005 1   0.63 1.14 1.85 2.48 3.43 4.25 5.38 8.41 11.19 15.04 16.93    
2006   0.30 0.61 0.99 1.46 2.04 2.55 3.39 3.50 4.70 6.36        
2007   0.42 0.60 1.20 1.76 2.40 3.18 3.96 5.19 6.61 9.48 7.65 12.65 15.74 19.66
2009 1 0.12 0.45 0.95 1.60 2.18 3.36 4.52 6.04 7.30 9.42 10.35 11.47 12.54  
2010 2 0.18 0.56 1.11 1.73 2.36 3.36 5.14 6.88 8.64 9.65 6.83      
2011 1   0.45 0.90 1.26 1.84 2.55 4.08 5.61 8.17 8.14 7.31 8.91    
2012 2   0.40 0.84 1.29 1.96 2.78 3.71 4.99 7.42   7.19 9.32    
2013   0.17 0.72 1.06 1.63 2.36 3.14 3.90 4.36 6.55          
2014   0.24 0.43 0.74 1.27 1.85 2.60 3.56 4.51 5.52 7.18 9.42 9.26 13.16 15.05
2015 2   0.40 0.80 1.19 1.79 2.45 3.38 4.41 5.85 6.64 7.48 6.77    
2016 3 0.11 0.38 0.76 1.20 1.72 2.50 3.39 4.96 7.11 8.56        
2017 2 0.12 0.42 0.75 1.17 1.69 2.50 3.39 4.47 5.69 5.93 6.00 10.91 13.57 10.52
2018 2 0.19 0.45 0.83 1.30 1.86 2.57 3.55 4.92 5.51 7.84 7.08 7.28    
2019 2 0.19 0.39 0.90 1.30 1.85 2.65 3.48 4.83 5.96 5.67 7.04 8.36    
2021 2   0.36 0.60 1.20 1.83 2.49 3.11 4.55 6.10 6.50 7.03   9.013 17.13
2022 2   0.49 0.80 1.25 1.83 2.77 4.06 5.52 7.71 8.87 12.18      
1 IIa and IIb combined                      
2 I,IIa and IIb combined                      
3 I and IIb combined                        
Iceland (Sub-area I)                        
1994   0.42 0.85 1.44 2.77 3.54 4.08 5.84 6.37 7.02 7.48 7.37      
1995     1.17 0.91 1.60 2.28 3.61 4.73 6.27     6.26      
1996     0.36 0.99 1.55 2.83 3.79 4.81 5.34 7.25 7.68 9.08 8.98 10.52  
1997   0.42 0.43 0.76 1.60 2.40 3.45 4.40 5.74 6.15   8.28 10.52 9.89  
UK (England & Wales)                        
1995 1     1.47 2.11 3.47 5.57 6.43 7.17 8.12 8.05 10.2 10.1    
1996 2     1.55 1.81 2.42 3.61 6.3 6.47 7.83 7.91 8.93 9.38 10.9  
1997 2     1.93 2.17 3.07 4.17 4.89 6.46   12.3 8.44      
  1 Division IIa and IIb                      
  2 Division IIa                        
Poland (Division IIb)                        
2006   0.18 0.51 0.89 1.55 2.23 3.6 5.28 6.95 8.478 11 10.8 15.6 18.9  
2008     0.49 0.90 1.45 2.24 2.79 3.82 4.68 5.015 6.45 7.02 7.22 5.99 6.91
2009       1.02 1.72 2.65 3.81 5.23 6.91 8.862 11.1 13.6 16.5    
2010       1.39 1.66 2.29 2.98 3.92 5.18 6.313 6.66 8.72 9.05    
2011       0.99 1.50 2.17 3.15 4.43 7.45 7.28          
2016 1   0.84 1.59 2.29 2.81 3.91 4.78 5.61 6.709 7.89 8.54 11.6 13.7 16.09
2017 2   0.71 1.23 1.52 2.47 3.52 4.78 6.97 9.193 9.95 10.9 14.1    
2018 3   0.74 1.15 1.66 2.45 3.55 4.48 6.06 6.31 7.59 7.91 8.28 8.52 9.40
2019 1       1.57 2.00 2.69 4.04 5.61 7.23 9.13 11.62 12.41 13.46 11.47
  1 Division IIa                        
  2 Division IIa and IIb                      
  3 I and IIb combined                      
Table 3.7. Northeast Arctic COD. Weights at age (kg) in landings from various countries (continued)

SAM Wed May 31 08:24:02 2023

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp
1946 0.35 0.59 1.11 1.69 2.37 3.17 3.98 5.05 5.92 7.2 8.15 8.13 9.25
1947 0.32 0.56 0.95 1.5 2.14 2.92 3.65 4.56 5.84 7.42 8.85 8.79 10
1948 0.34 0.53 1.26 1.93 2.46 3.36 4.220 5.31 5.92 7.09 8.43 8.18 9.43
1949 0.37 0.67 1.11 1.66 2.5 3.23 4.070 5.27 5.99 7.08 8.22 8.26 8.7
1950 0.39 0.64 1.29 1.7 2.36 3.48 4.520 5.62 6.4 7.96 8.89 9.07 10.27
1951 0.4 0.83 1.39 1.88 2.54 3.46 4.880 5.2 7.14 8.22 9.39 9.5 9.52
1952 0.44 0.8 1.33 1.92 2.64 3.71 5.060 6.05 7.42 8.43 10.19 10.13 10.56
1953 0.4 0.76 1.28 1.93 2.81 3.72 5.060 6.34 7.4 8.67 10.24 11.41 11.93
1954 0.44 0.77 1.26 1.97 3.03 4.33 5.400 6.75 7.79 10.67 9.68 9.56 11.11
1955 0.32 0.57 1.13 1.73 2.75 3.94 4.900 7.04 7.2 8.78 10.08 11.02 12.11
1956 0.33 0.58 1.07 1.83 2.89 4.25 5.550 7.28 8 8.35 9.94 10.25 11.56
1957 0.33 0.59 1.02 1.82 2.89 4.28 5.490 7.51 8.24 9.25 10.61 10.82 12.07
1958 0.34 0.52 0.95 1.92 2.94 4.21 5.610 7.35 8.67 9.58 11.63 11 13.83
1959 0.35 0.72 1.47 2.68 3.59 4.32 5.450 6.44 7.17 8.63 11.62 11.95 13
1960 0.34 0.51 1.09 2.13 3.38 4.87 6.120 8.49 7.79 8.3 11.42 11.72 13.42
1961 0.31 0.55 1.05 2.2 3.23 5.11 6.150 8.15 8.68 9.6 11.95 13.18 13.42
1962 0.32 0.55 0.93 1.7 3.03 5.03 6.550 7.7 9.27 10.56 12.72 13.48 14.44
1963 0.32 0.61 0.96 1.73 3.04 4.96 6.440 7.91 9.62 11.31 12.74 13.19 14.29
1964 0.33 0.55 0.95 1.86 3.25 4.97 6.410 8.07 9.34 10.16 12.89 13.25 14
1965 0.38 0.68 1.03 1.49 2.41 3.52 5.730 7.54 8.47 11.17 13.72 13.46 14.12
1966 0.44 0.74 1.18 1.78 2.46 3.82 5.360 7.27 8.63 10.66 14.15 14 15
1967 0.29 0.81 1.35 2.04 2.81 3.48 4.890 7.11 9.03 10.59 13.83 14.15 16.76
1968 0.33 0.7 1.48 2.12 3.14 4.21 5.270 6.65 9.01 9.66 14.85 16.3 17
1969 0.44 0.79 1.23 2.03 2.9 3.81 5.020 6.43 8.33 10.71 14.21 15 17
1970 0.37 0.91 1.34 2 3 4.15 5.590 7.6 8.97 10.99 14.07 14.61 16
1971 0.45 0.88 1.38 2.16 3.07 4.22 5.810 7.13 8.62 10.83 12.95 14.25 15.97
1972 0.38 0.77 1.43 2.12 3.23 4.38 5.830 7.62 9.52 12.09 13.67 13.85 16
1973 0.38 0.91 1.54 2.26 3.29 4.61 6.570 8.37 10.54 11.62 13.9 14 15.84
1974 0.32 0.66 1.17 2.22 3.21 4.39 5.520 7.86 9.82 11.41 13.24 13.7 14.29
1975 0.41 0.64 1.11 1.9 2.95 4.37 5.740 8.77 9.92 11.81 13.11 14 14.29
1976 0.35 0.73 1.19 2.01 2.76 4.22 5.880 9.3 10.28 11.86 13.54 14.31 14.28
1977 0.49 0.9 1.43 2.05 3.3 4.56 6.460 8.63 9.93 10.9 13.67 14.26 14.91
1978 0.49 0.81 1.45 2.15 3.04 4.46 6.540 7.98 10.15 10.85 13.18 14 15
1979 0.35 0.7 1.24 2.14 3.15 4.29 6.580 8.61 9.22 10.89 14.34 14.5 15.31
1980 0.27 0.56 1.02 1.72 3.02 4.2 5.840 7.26 8.84 9.28 14.45 15 15.5
1981 0.49 0.98 1.44 2.09 2.98 4.85 6.570 9.16 10.82 10.77 13.93 15 16
1982 0.37 0.66 1.35 1.99 2.93 4.24 6.460 8.51 12.24 10.78 14.04 15 16
1983 0.84 1.37 2.09 2.86 3.99 5.58 7.770 9.29 11.55 11.42 12.8 14.18 15.55
1984 1.42 1.93 2.49 3.14 3.91 4.91 6.020 7.4 8.13 11.42 12.8 14.18 15.55
1985 0.94 1.37 2.02 3.22 4.63 6.04 7.660 9.81 11.8 11.42 12.8 14.18 15.55
1986 0.64 1.27 1.88 2.79 4.49 5.84 6.830 7.69 9.81 11.42 12.8 14.18 15.55
1987 0.49 0.88 1.55 2.33 3.44 5.92 8.600 9.6 12.17 11.42 12.8 14.18 15.55
1988 0.54 0.85 1.32 2.24 3.52 5.35 8.060 9.51 11.36 11.42 12.8 14.18 15.55
1989 0.74 0.96 1.31 1.92 2.93 4.64 7.520 9.12 11.08 11.42 12.8 14.18 15.55
1990 0.81 1.22 1.64 2.22 3.24 4.68 7.300 9.84 13.25 11.42 12.8 14.18 15.55
1991 1.05 1.45 2.15 2.89 3.75 4.71 6.080 8.82 11.8 11.42 12.8 14.18 15.55
1992 1.16 1.57 2.21 3.1 4.27 5.19 6.140 7.77 10.12 11.42 12.8 14.18 15.55
1993 0.81 1.52 2.16 2.79 4.07 5.53 6.470 7.19 7.98 11.457 12.8 14.18 15.55
1994 0.82 1.3 2.06 2.89 3.21 5.2 6.800 7.57 8.01 9.955 13.012 14.18 15.55
1995 0.77 1.2 1.78 2.59 3.81 4.99 6.230 8.05 8.74 9.774 11.388 14.546 15.55
1996 0.79 1.11 1.61 2.46 3.82 5.72 6.740 8.04 9.28 10.451 11.19 12.819 16.045
1997 0.67 1.04 1.53 2.22 3.42 5.2 7.190 7.73 8.61 11.145 11.926 12.608 14.234
1998 0.68 1.05 1.62 2.3 3.3 4.86 6.870 9.3 10.3 10.754 12.676 13.394 14.011
1999 0.63 1.01 1.54 2.34 3.21 4.29 6 6.73 10.08 11.151 12.255 14.191 14.839
2000 0.57 1.04 1.61 2.34 3.34 4.48 5.72 7.52 8.02 11.93 12.682 13.743 15.675
2001 0.66 1.05 1.62 2.51 3.51 4.78 6.04 7.54 9 10.23 13.519 14.197 15.206
2002 0.72 1.13 1.56 2.31 3.52 4.78 6.2 7.66 9.14 10.379 11.687 15.081 15.681
2003 0.67 1.12 1.83 2.5 3.58 5.04 6.36 8.2 10.71 10.167 11.848 13.138 16.602
2004 0.72 1.13 1.61 2.43 3.27 4.72 6.71 7.98 9.19 10.84 11.619 13.31 14.571
2005 0.69 1.08 1.57 2.21 3.26 4.44 6.23 8.19 9.72 10.626 12.347 13.066 14.752
2006 0.72 1.16 1.6 2.39 3.32 4.54 5.47 6.78 7.7 10.8 12.116 13.842 14.494
2007 0.74 1.21 1.83 2.51 3.82 5.04 6.58 8.08 8.94 10.349 12.304 13.596 15.309
2008 0.77 1.27 1.87 2.82 3.79 5.12 6.22 7.75 8.4 10.139 11.816 13.795 15.052
2009 0.75 1.17 1.74 2.42 3.86 5.35 6.43 8.01 8.67 10.055 11.588 13.276 15.261
2010 0.78 1.2 1.74 2.44 3.4 5.04 6.25 7.32 8.53 10.378 11.496 13.033 14.715
2011 0.78 1.31 1.72 2.37 3.2 4.62 6.18 7.47 8.57 10.387 11.847 12.935 14.459
2012 0.67 1.14 1.73 2.34 3.12 4.4 6.28 8.24 10.35 10.367 11.857 13.309 14.356
2013 0.71 1.17 1.67 2.36 3.19 4.22 5.58 7.31 9.08 11.029 11.835 13.32 14.75
2014 0.79 1.2 1.73 2.34 3.28 4.21 5.49 6.98 8.67 10.823 12.551 13.297 14.761
2015 0.78 1.09 1.55 2.18 3.14 4.46 5.61 6.62 7.34 10.215 12.328 14.058 14.737
2016 0.78 1.14 1.66 2.26 3.25 4.5 5.98 7.31 8.54 9.372 11.67 13.822 15.536
2017 0.71 1.15 1.66 2.32 3.32 4.67 6.13 7.15 8.14 9.597 10.752 13.121 15.288
2018 0.86 1.17 1.71 2.5 3.31 4.61 6.03 7.32 8.06 9.707 10.998 12.137 14.552
2019 0.68 1.15 1.66 2.39 3.33 4.45 6.11 7.29 8.41 9.806 11.117 12.401 13.513
2020 0.709 1.084 1.604 2.195 3.092 4.39 5.731 7.218 8.406 9.989 11.226 12.529 13.793
2021 0.527 0.896 1.487 2.159 2.982 4.364 6.048 7.348 8.796 9.991 11.424 12.645 13.928
2022 0.623 0.956 1.478 2.245 3.247 4.441 5.877 7.328 8.738 10.122 11.427 12.858 14.051
Table 3.8. Northeast Arctic COD. Catch weights at age (kg)

SAM Wed May 31 08:24:02 2023

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp
1946 0.35 0.59 1.11 1.69 2.37 3.17 3.98 5.05 5.92 7.2 8.146 8.133 9.253
1947 0.32 0.56 0.95 1.5 2.14 2.92 3.65 4.56 5.84 7.42 8.848 8.789 9.998
1948 0.34 0.53 1.26 1.93 2.46 3.36 4.22 5.31 5.92 7.09 8.43 8.181 9.433
1949 0.37 0.67 1.11 1.66 2.5 3.23 4.07 5.27 5.99 7.08 8.218 8.259 8.701
1950 0.39 0.64 1.29 1.7 2.36 3.48 4.52 5.62 6.4 7.96 8.891 9.07 10.271
1951 0.4 0.83 1.39 1.88 2.54 3.46 4.88 5.2 7.14 8.22 9.389 9.502 9.517
1952 0.44 0.8 1.33 1.92 2.64 3.71 5.06 6.05 7.42 8.43 10.185 10.134 10.563
1953 0.4 0.76 1.28 1.93 2.81 3.72 5.06 6.34 7.4 8.67 10.238 11.409 11.926
1954 0.44 0.77 1.26 1.97 3.03 4.33 5.4 6.75 7.79 10.67 9.68 9.557 11.106
1955 0.32 0.57 1.13 1.73 2.75 3.94 4.9 7.04 7.2 8.78 10.077 11.023 12.105
1956 0.33 0.58 1.07 1.83 2.89 4.25 5.55 7.28 8 8.35 9.944 10.248 11.564
1957 0.33 0.59 1.02 1.82 2.89 4.28 5.49 7.51 8.24 9.25 10.605 10.825 12.075
1958 0.34 0.52 0.95 1.92 2.94 4.21 5.61 7.35 8.67 9.58 11.631 11 13.832
1959 0.35 0.72 1.47 2.68 3.59 4.32 5.45 6.44 7.17 8.63 11.621 11.95 13
1960 0.34 0.51 1.09 2.13 3.38 4.87 6.12 8.49 7.79 8.3 11.422 11.719 13.424
1961 0.31 0.55 1.05 2.2 3.23 5.11 6.15 8.15 8.68 9.6 11.952 13.181 13.422
1962 0.32 0.55 0.93 1.7 3.03 5.03 6.55 7.7 9.27 10.56 12.717 13.482 14.44
1963 0.32 0.61 0.96 1.73 3.04 4.96 6.44 7.91 9.62 11.31 12.737 13.193 14.287
1964 0.33 0.55 0.95 1.86 3.25 4.97 6.41 8.07 9.34 10.16 12.886 13.251 14
1965 0.38 0.68 1.03 1.49 2.41 3.52 5.73 7.54 8.47 11.17 13.722 13.465 14.118
1966 0.44 0.74 1.18 1.78 2.46 3.82 5.36 7.27 8.63 10.66 14.148 14 15
1967 0.29 0.81 1.35 2.04 2.81 3.48 4.89 7.11 9.03 10.59 13.829 14.146 16.756
1968 0.33 0.7 1.48 2.12 3.14 4.21 5.27 6.65 9.01 9.66 14.848 16.3 17
1969 0.44 0.79 1.23 2.03 2.9 3.81 5.02 6.43 8.33 10.71 14.211 15 17
1970 0.37 0.91 1.34 2 3 4.15 5.59 7.6 8.97 10.99 14.074 14.611 16
1971 0.45 0.88 1.38 2.16 3.07 4.22 5.81 7.13 8.62 10.83 12.945 14.25 15.973
1972 0.38 0.77 1.43 2.12 3.23 4.38 5.83 7.62 9.52 12.09 13.673 13.852 16
1973 0.38 0.91 1.54 2.26 3.29 4.61 6.57 8.37 10.54 11.62 13.904 14 15.841
1974 0.32 0.66 1.17 2.22 3.21 4.39 5.52 7.86 9.82 11.41 13.242 13.704 14.291
1975 0.41 0.64 1.11 1.9 2.95 4.37 5.74 8.77 9.92 11.81 13.107 14 14.293
1976 0.35 0.73 1.19 2.01 2.76 4.22 5.88 9.3 10.28 11.86 13.544 14.311 14.284
1977 0.49 0.9 1.43 2.05 3.3 4.56 6.46 8.63 9.93 10.9 13.668 14.255 14.906
1978 0.49 0.81 1.45 2.15 3.04 4.46 6.54 7.98 10.15 10.85 13.177 14 15
1979 0.35 0.7 1.24 2.14 3.15 4.29 6.58 8.61 9.22 10.89 14.344 14.5 15.315
1980 0.27 0.56 1.02 1.72 3.02 4.2 5.84 7.26 8.84 9.28 14.448 15 15.5
1981 0.49 0.98 1.44 2.09 2.98 4.85 6.57 9.16 10.82 10.77 13.932 15 16
1982 0.37 0.66 1.35 1.99 2.93 4.24 6.46 8.51 12.24 10.78 14.041 15 16
1983 0.37 0.92 1.6 2.44 3.82 4.76 6.17 7.7 9.25 12.621 14.544 16.466 18.388
1984 0.42 1.16 1.81 2.79 3.78 4.57 6.17 7.7 9.25 12.621 14.544 16.466 18.388
1985 0.413 0.875 1.603 2.81 4.059 5.833 7.685 10.117 14.29 12.621 14.544 16.466 18.388
1986 0.311 0.88 1.47 2.467 3.915 5.81 6.58 6.833 11.004 12.621 14.544 16.466 18.388
1987 0.211 0.498 1.254 2.047 3.431 5.137 6.523 9.3 13.15 12.621 14.544 16.466 18.388
1988 0.212 0.404 0.79 1.903 2.977 4.392 7.812 12.112 13.107 12.621 14.544 16.466 18.388
1989 0.299 0.52 0.868 1.477 2.686 4.628 7.048 9.98 9.25 12.621 14.544 16.466 18.388
1990 0.398 0.705 1.182 1.719 2.458 3.565 4.71 7.801 8.956 12.621 14.544 16.466 18.388
1991 0.518 1.136 1.743 2.428 3.214 4.538 6.88 10.719 9.445 12.621 14.544 16.466 18.388
1992 0.44 0.931 1.812 2.716 3.895 5.176 6.774 9.598 12.427 12.621 14.544 16.466 18.388
1993 0.344 1.172 1.82 2.823 4.031 5.497 6.765 8.571 10.847 12.621 14.544 16.466 18.388
1994 0.237 0.757 1.419 2.458 3.845 5.374 6.648 7.653 8.136 12.916 16.114 16.466 18.388
1995 0.197 0.487 1.141 2.118 3.504 4.915 6.949 9.051 9.775 11.409 15.248 18.62 18.388
1996 0.206 0.482 0.98 2.041 3.52 5.507 7.74 9.922 10.63 12.093 13.533 17.659 21.171
1997 0.211 0.537 1.11 1.876 3.381 5.258 8.546 10.653 10.776 13.232 14.313 15.745 20.122
1998 0.242 0.561 1.179 1.936 2.944 4.583 7.092 10.7 12.042 13.771 15.607 16.617 18.021
1999 0.209 0.514 1.183 2.007 3.037 4.479 6.512 10.028 11.117 14.698 16.215 18.057 18.981
2000 0.194 0.465 1.218 1.963 3.064 4.12 5.746 7.157 9.961 14.589 17.26 18.733 20.557
2001 0.284 0.513 1.21 2.25 3.299 5.066 6.373 9.29 11.456 13.317 17.138 19.887 21.294
2002 0.23 0.603 1.184 2.138 3.336 4.81 6.912 8.809 10.475 12.534 15.703 19.752 22.549
2003 0.233 0.551 1.317 2.022 3.239 4.984 6.727 8.422 14.226 12.524 14.815 18.164 22.403
2004 0.24 0.55 1.074 2.038 2.911 4.402 6.263 8.535 10.197 12.371 14.803 17.176 20.674
2005 0.225 0.61 1.083 1.87 3.002 3.971 5.789 8.127 12.759 12.611 14.63 17.163 19.594
2006 0.252 0.591 1.219 2.014 3.028 4.434 5.999 7.774 9.954 13.679 14.902 16.97 19.58
2007 0.249 0.663 1.329 2.127 3.183 4.59 6.477 8.88 12.124 12.261 16.111 17.274 19.368
2008 0.286 0.726 1.418 2.41 3.331 4.914 6.747 8.851 10.393 12.776 14.504 18.617 19.701
2009 0.274 0.652 1.353 2.312 3.803 5.103 6.75 9.252 10.119 12.323 15.09 16.83 21.168
2010 0.258 0.608 1.208 2.01 3.088 4.903 6.498 7.992 9.689 12.467 14.574 17.483 19.214
2011 0.225 0.6 1.097 1.926 2.861 4.403 6.531 8.648 9.885 12.508 14.738 16.909 19.929
2012 0.227 0.555 1.182 1.834 2.831 4.124 6.056 8.584 11.498 12.249 14.785 17.092 19.3
2013 0.247 0.577 1.134 1.998 2.841 4.015 5.523 8.077 10.304 13.207 14.491 17.144 19.501
2014 0.216 0.577 1.137 1.791 2.781 3.85 5.245 6.992 9.378 12.746 15.578 16.816 19.558
2015 0.229 0.54 1.134 1.934 2.753 4.081 5.315 7.135 8.947 11.778 15.056 18.025 19.198
2016 0.21 0.536 1.001 1.812 2.72 3.958 5.64 7.064 8.569 10.885 13.954 17.445 20.522
2017 0.255 0.675 1.107 1.896 2.826 4.158 5.7 7.628 9.071 10.634 12.934 16.216 19.888
2018 0.286 0.62 1.188 1.949 2.768 4.059 5.749 7.38 9.097 10.8 12.646 15.073 18.54
2019 0.24 0.603 1.085 1.82 3.025 4.296 5.891 7.293 9.667 11.186 12.837 14.749 17.28
2020 0.148 0.503 1.055 1.692 2.59 4.064 5.617 7.673 9.313 11.306 13.278 14.964 16.922
2021 0.17 0.437 0.954 1.718 2.669 3.804 5.822 7.396 9.334 11.187 13.415 15.459 17.159
2022 0.293 0.48 0.929 1.616 2.741 3.933 5.744 8.012 9.648 11.255 13.279 15.613 17.706
2023 0.271 0.645 1.022 1.71 2.876 4.353 5.925 7.864 9.824 11.36 13.478 15.46 17.876
Table 3.9. Northeast Arctic COD. Stock weights at age (kg)
Norway              
               
  Percentage mature
  Age
Year 3 4 5 6 7 8 9 10
                 
1982 0 5 10 34 65 82 92 100
1983 5 8 10 30 73 88 97 100
                 
Russia                
  Percentage mature
  Age
Year 3 4 5 6 7 8 9 10
                 
1984 0 5 18 31 56 90 99 100
1985 0 1 10 33 59 85 92 100
1986 0 2 9 19 56 76 89 100
1987 0 1 9 23 27 61 81 80
1988 0 1 3 25 53 79 100 100
1989 0 0 2 15 39 59 83 100
1990 0 2 6 20 47 62 81 95
1991 0 3 1 23 66 82 96 100
1992 0 1 8 31 73 92 95 100
1993 0 3 7 21 56 89 95 99
1994 0 1 8 30 55 84 95 98
1995 0 0 4 23 61 75 94 97
1996 0 0 1 22 56 82 95 100
1997 0 0 1 10 48 73 90 100
1998 0 0 2 15 47 87 97 96
1999 0 0.2 1.3 9.9 38.4 74.9 94 100
2000 0 0 6 19.2 51.4 84 95.5 100
2001 0.1 0.1 3.9 27.9 62.3 89.4 96.3 100
2002 0.1 1.9 10.9 34.4 68.1 82.8 97.6 100
2003 0.2 0 11 29.2 65.9 89.6 95.1 100
2004 0 0.7 8 33.8 63.3 83.4 96.4 96.4
2005 0 0.6 4.6 24.2 61.5 84.9 95.3 98.1
2006 0 0 6.1 29.6 59.6 89.5 96.4 100
2007 0 0.4 5.7 20.8 60.4 83.5 96 100
2008 0 0.5 4 24.6 48.3 84.4 94.7 98.7
2009 0 0 6 28 66 85 97 100
2010 0 0.2 1.5 22.8 47 77.4 90.2 95.5
2011 0 0 2.2 20.7 50.4 73.7 90.6 95.6
2012 0.2 0 1.5 10.8 43.9 76.1 90.8 96.4
2013 0 0 0.6 10.6 41.8 70.6 89.8 96.9
2014 0 0 1.9 14.1 45.9 76 92 97.5
2015 0 0.2 0.2 7.9 27 60.8 83.4 93.7
2016 0 0 0.2 5.2 22.4 44.1 74.8 92.5
2017* 0 0 0.8 6.3 20.8 51.6 80.4 98.6
2018 0 0.5 2.5 23.6 53.9 79.4 92.5 96.0
2019** 0 0 4.5 11.9 56.4 91.8 95.1 100
2020** 0 0.4 1.7 15.8 43.8 71.2 74.9 84.9
2021** 0 0 2.7 16.1 44.1 72.2 87.1 88.1
2022** 0 0 0.8 11.6 59.7 72.6 80.4 96.2
2023** 0 0 0.3 12.3 50.9 84.3 92.6 97.5
*Not used in inputs (instead ratios presented in WD 10, 2017 used for further calculations) **Not used in inputs (instead ratios presented in WD 15, 2019 used for further calculations)
Table 3.10. Northeast Arctic COD. Basis for maturity ogives (percent) used in the assessment. Norwegian and Russian data.
Norway                
  Percentage mature
  Age
Year 3 4 5 6 7 8 9 10
1985 0.31 1.36 8.94 38.33 51.27 85.13 100 79.2
1986 2.92 7 7.85 18.85 49.72 66.52 35.59 80.09
1987 0 0.07 4.49 12.42 16.28 31.23 19.32  
1988 0 2.35 6.16 40.54 53.63 45.36 100 100
1989 1.52 0.67 3.88 30.65 70.36 82.02 100 100
1990 1.52 0.67 4.18 22 57.45 80.95 100 100
1991 0.1 3.4 13.93 38.03 75.52 90.12 95.39 100
1992 0.22 1.85 21.04 52.83 86.95 96.52 99.83 100
1993 0 2.6 10.37 52.6 84.8 97.25 99.3 99.73
1994 0.51 0.33 15.78 36.92 62.84 88.44 97.56 100
1995 0 0.62 8.19 51.48 63.75 81.11 98.01 99.34
1996 0.03 0 2.82 29.56 70.22 82.06 100 100
1997 0 0 1.48 17.91 73.31 93.01 99.12 100
1998 0.12 0.68 3.17 15.42 47.31 75.73 94.3 100
1999 0.42 0.16 1.6 27.46 70.48 94.57 98.99 100
2000 0 0.11 8.15 30.23 77.3 81.95 100 100
2001 0.49 0.51 9.03 43.81 62.52 74.36 94.13 100
2002 0.27 0.73 5.94 43.22 68.4 85.31 92.52 100
2003 0.02 0.18 6.5 35.97 68.56 87.97 96.3 100
2004 0.24 1.36 10.23 54.56 81.84 90.94 98.76 98.91
2005 0 0.27 9 55.16 81.77 93.51 98.03 100
2006 0 0.22 5.92 44.25 69.85 89.89 96.65 100
2007 0.12 0.33 8.7 47.88 84.29 91.68 99.11 100
2008 0 0.27 9.27 34.13 61.39 88.04 91.17 100
2009 0 0 9 46 85 86 98 99
2010 0 0.36 7.5 41.75 67.7 90.1 95.29 98.55
2011 0 0.2 5.2 48 77.7 89.7 97.3 97.2
2012 0 0 7.7 32.2 67.5 81 90.9 96.3
2013 0 0.3 1 20.2 55.3 80 91.8 99.3
2014 0 0.4 2 13.3 56.7 85 93.8 98.7
2015 0 0 1.9 10.9 29.2 79.1 93.1 99.6
2016 0.07 0. 2 1.0 6.4 28.5 71.3 86. 1 98.6
2017 0 0.2 0.5 18 54.8 81.4 95.9 100
2018 0 0.1 3.0 16.2 38.3 61.0 93.7 98.9
2019 0 0. 4 4 .0 24 . 0 6 8. 6 93 . 2 9 6 .7 9 9 . 8
2020 0 0.44 3.18 13.68 42.51 80.06 91.18 94.03
2021 0.28 0.25 0.79 17.11 43.21 68.80 90.75 98.63
2022 1.55 0 1.19 9.54 44.22 70.17 77.19 98.50
2023 0.80 2.10 2.29 8.89 49.84 80.60 94.93 94.05

SAM Wed May 31 08:24:02 2023

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp
1946 0 0 0.01 0.03 0.06 0.11 0.18 0.44 0.65 0.86 0.96 0.96 1
1947 0 0 0.01 0.03 0.06 0.13 0.16 0.42 0.75 0.91 0.95 1 1
1948 0 0 0.01 0.03 0.07 0.13 0.25 0.47 0.73 0.91 0.97 1 1
1949 0 0 0.01 0.03 0.09 0.17 0.29 0.54 0.79 0.88 0.97 1 1
1950 0 0 0.01 0.03 0.09 0.23 0.35 0.52 0.79 0.95 0.97 1 1
1951 0 0 0.01 0.03 0.1 0.24 0.4 0.58 0.72 0.85 0.96 1 1
1952 0 0 0.01 0.03 0.08 0.22 0.41 0.63 0.82 0.92 0.97 1 1
1953 0 0 0.01 0.03 0.07 0.19 0.4 0.64 0.84 0.94 0.97 1 1
1954 0 0 0.01 0.03 0.08 0.16 0.37 0.68 0.87 0.93 0.96 1 1
1955 0 0 0.01 0.03 0.07 0.13 0.26 0.53 0.83 0.92 0.97 1 1
1956 0 0 0.01 0.03 0.06 0.12 0.14 0.41 0.67 0.91 0.96 1 1
1957 0 0 0.01 0.03 0.06 0.09 0.12 0.22 0.6 0.82 0.97 1 1
1958 0 0 0.01 0.03 0.06 0.1 0.1 0.3 0.5 0.82 0.97 1 1
1959 0 0 0.01 0.04 0.12 0.34 0.49 0.67 0.84 0.87 1 1 1
1960 0 0.01 0.03 0.06 0.1 0.19 0.45 0.69 0.77 0.85 0.99 1 1
1961 0 0 0.01 0.06 0.12 0.31 0.65 0.91 0.98 0.98 1 0.96 1
1962 0 0 0.01 0.05 0.15 0.34 0.61 0.81 0.92 0.97 1 0.932 1
1963 0 0.01 0.01 0.03 0.07 0.28 0.42 0.81 0.98 0.98 1 0.966 1
1964 0 0 0 0.03 0.13 0.37 0.66 0.89 0.95 0.99 1 1 1
1965 0 0 0 0.01 0.06 0.2 0.55 0.73 0.99 0.98 1 1 1
1966 0 0 0.01 0.02 0.06 0.22 0.35 0.74 0.94 0.94 1 1 1
1967 0 0 0 0.03 0.07 0.14 0.38 0.64 0.89 0.9 1 1 1
1968 0 0 0.03 0.05 0.09 0.19 0.39 0.58 0.82 1 1 1 1
1969 0 0 0 0.02 0.04 0.12 0.34 0.55 0.74 0.95 1 1 1
1970 0 0.01 0 0.01 0.07 0.23 0.58 0.81 0.89 0.91 1 1 1
1971 0 0 0.01 0.05 0.11 0.3 0.59 0.79 0.86 0.88 1 1 1
1972 0.01 0.02 0.02 0.01 0.1 0.34 0.64 0.81 0.94 1 1 1 1
1973 0 0 0 0.02 0.16 0.53 0.81 0.92 0.95 0.98 1 1 1
1974 0 0 0 0.01 0.03 0.21 0.5 0.96 1 0.96 1 1 1
1975 0 0 0.01 0.02 0.09 0.21 0.56 0.78 0.79 0.95 1 1 1
1976 0 0 0 0.05 0.12 0.29 0.45 0.84 0.83 1 0.9 1 1
1977 0 0 0.02 0.08 0.26 0.54 0.76 0.87 0.93 0.94 0.9 1 1
1978 0 0 0 0.02 0.13 0.44 0.71 0.77 0.81 0.89 0.8 1 1
1979 0 0 0 0.03 0.13 0.39 0.77 0.89 0.83 0.78 0.9 1 1
1980 0 0 0 0.02 0.13 0.35 0.65 0.82 1 0.9 0.9 1 1
1981 0 0 0.02 0.07 0.2 0.54 0.8 0.97 1 1 1 1 1
1982 0 0.05 0.1 0.34 0.65 0.82 0.92 1 1 1 1 1 1
1983 0.01 0.08 0.1 0.3 0.73 0.88 0.97 1 1 1 1 1 1
1984 0 0.05 0.18 0.31 0.56 0.9 0.99 1 1 1 1 1 1
1985 0 0.01 0.09 0.36 0.55 0.85 0.96 0.9 1 1 1 1 1
1986 0 0.05 0.08 0.19 0.53 0.71 0.62 0.9 1 1 1 1 1
1987 0 0.01 0.07 0.18 0.22 0.46 0.5 0.75 1 1 1 1 1
1988 0 0.02 0.05 0.33 0.53 0.62 1 1 1 1 1 1 1
1989 0.008 0.003 0.029 0.228 0.547 0.705 0.915 1 1 1 1 1 1
1990 0.008 0.013 0.051 0.21 0.522 0.715 0.905 0.975 1 1 1 1 1
1991 0.001 0.032 0.075 0.305 0.708 0.861 0.957 1 1 1 1 1 1
1992 0.001 0.014 0.145 0.419 0.8 0.943 0.974 1 1 1 1 1 1
1993 0 0.028 0.087 0.368 0.704 0.931 0.972 0.994 1 1 1 1 1
1994 0 0.005 0.119 0.336 0.583 0.876 0.965 0.99 1 1 1 1 1
1995 0 0.005 0.06 0.373 0.614 0.748 0.955 0.98 1 1 1 1 1
1996 0 0 0.016 0.252 0.619 0.817 0.975 1 1 1 1 1 1
1997 0 0 0.014 0.14 0.597 0.842 0.95 0.967 1 1 1 1 1
1998 0 0.005 0.031 0.168 0.468 0.828 0.956 0.98 1 1 1 1 1
1999 0 0.001 0.014 0.17 0.506 0.841 0.961 1 1 1 1 1 1
2000 0 0 0.066 0.261 0.699 0.872 0.978 1 1 1 1 1 1
2001 0.001 0.006 0.069 0.378 0.646 0.851 0.955 1 1 1 1 1 1
2002 0.001 0.015 0.085 0.412 0.695 0.846 0.97 1 1 1 1 1 1
2003 0.001 0 0.089 0.331 0.662 0.882 0.96 1 1 1 1 1 1
2004 0 0.009 0.092 0.438 0.728 0.883 0.973 0.974 1 1 1 1 1
2005 0 0.003 0.066 0.366 0.72 0.897 0.971 0.991 1 1 1 1 1
2006 0 0.015 0.061 0.367 0.633 0.907 0.961 1 1 1 1 1 1
2007 0 0.007 0.076 0.37 0.719 0.884 0.977 1 1 1 1 1 1
2008 0.005 0.008 0.082 0.309 0.539 0.869 0.928 0.994 1 1 1 1 1
2009 0 0 0.081 0.362 0.745 0.859 0.978 0.997 0.994 1 1 1 1
2010 0.005 0.006 0.06 0.335 0.552 0.838 0.931 0.971 0.983 1 1 1 1
2011 0 0 0.04 0.339 0.644 0.798 0.932 0.963 0.991 1 1 1 1
2012 0.001 0 0.058 0.209 0.544 0.799 0.93 0.967 0.99 1 1 1 1
2013 0 0 0.01 0.156 0.482 0.763 0.913 0.982 0.985 1 1 1 1
2014 0 0 0.025 0.137 0.516 0.806 0.935 0.984 0.996 1 1 1 1
2015 0 0.001 0.004 0.074 0.282 0.681 0.891 0.963 0.984 1 1 1 1
2016 0 0 0.002 0.057 0.256 0.569 0.832 0.955 0.984 1 1 1 1
2017 0 0.018 0.003 0.148 0.463 0.749 0.931 0.99 1 1 1 1 1
2018 0 0.003 0.028 0.207 0.478 0.731 0.916 0.971 1 1 1 1 1
2019 0 0 0.01 0.126 0.466 0.842 0.942 0.968 0.996 1 1 1 1
2020 0 0 0.014 0.112 0.356 0.775 0.904 0.955 1 1 1 1 1
2021 0.002 0.002 0.006 0.14 0.386 0.657 0.893 0.974 0.959 1 1 1 1
2022 0.014 0 0.01 0.079 0.402 0.674 0.756 0.975 1 1 1 1 1
2023 0.007 0.02 0.019 0.074 0.454 0.774 0.93 0.931 1 1 1 1 1
Table 3.11. Northeast Arctic cod. Proportion mature-at-age



Year/age 0 1 2 3 4 5 6
1984 0.000 444.972 22.422 0.216 0.000 0.000 0.000
1985 1637.455 354.699 71.701 0.198 0.000 0.000 0.000
1986 69.519 1120.596 343.865 87.590 0.000 0.000 0.000
1987 652.577 194.829 326.521 14.415 0.000 0.000 0.000
1988 32.259 486.347 26.538 1.794 0.000 0.000 0.000
1989 953.436 142.971 0.000 0.000 0.000 0.000 0.000
1990 0.000 110.123 23.502 0.000 0.000 0.000 0.000
1991 118.142 139.027 182.621 1.622 0.000 0.000 0.000
1992 3151.834 895.370 143.893 4.190 0.000 0.000 0.000
1993 3866.066 18279.371 480.685 46.668 1.308 0.420 0.000
1994 7966.736 7022.618 649.249 129.824 49.681 7.907 0.412
1995 8187.453 14882.872 758.834 211.203 67.053 3.734 0.223
1996 10206.699 21734.707 1473.858 136.447 52.739 18.486 1.071
1997 3073.182 17684.439 1899.740 165.816 15.732 1.219 0.220
1998 92.697 5718.231 579.436 204.909 23.507 1.461 0.467
1999 636.930 2113.085 304.436 50.842 4.195 0.004 0.000
2000 1918.192 2556.567 188.542 38.403 13.994 3.844 0.042
2001 94.644 2400.015 114.714 23.824 11.639 1.794 0.917
2002 7562.139 456.858 404.711 41.312 5.314 0.806 0.017
2003 5399.637 4113.972 107.659 24.129 0.000 0.000 0.000
2004 6491.276 2402.169 566.858 20.404 10.403 1.310 0.223
2005 2476.323 3035.950 133.405 79.995 4.526 5.498 0.512
2006 3319.747 2130.275 150.618 6.259 2.020 0.075 0.000
2007 2296.859 1152.611 189.151 74.223 3.411 0.126 0.000
2008 14429.785 704.780 85.607 96.516 31.818 4.202 0.000
2009 9632.264 7349.412 143.271 66.372 20.512 5.093 0.217
2010 4178.921 7164.249 301.457 53.687 27.753 16.665 2.209
2011 12554.996 4425.216 452.354 172.861 40.389 10.589 5.068
2012 21163.926 11949.604 1017.947 101.742 30.631 4.331 0.000
2013 26528.422 4791.451 1554.036 173.389 16.685 7.397 1.115
2014 36229.443 6090.830 728.424 192.786 52.474 5.093 0.063
2015 1539.488 10543.474 305.912 67.449 38.833 16.406 1.616
2016 11978.708 2534.319 501.554 11.760 18.186 26.553 6.267
2017 21533.301 1582.206 385.778 115.850 7.938 4.288 2.936
2018 7268.588 13522.863 275.855 35.641 2.227 0.268 0.000
2019 844.766 8504.830 837.120 53.976 5.723 0.019 0.000
2020 3206.167 2581.250 340.399 148.635 43.880 10.862 0.563
2021 23808.050 1592.617 235.029 72.359 23.731 13.086 1.557
2022 9979.849 4582.560 292.036 12.354 1.297 0.059 0.000
Table 3.12. The Northeast Arctic cod stock's consumption of cod in million individuals

Table 3.13. Northeast Arctic COD. Tuning data

104

FLT15_I: NorBarTrSur_I

1981 2023

1 1 0.085 0.189

3 12

1 1640 2330 4000 3840 480 100 30 NA NA NA

1 2830 2770 2360 1550 1600 140 20 NA NA NA

1 2495 5234 4333 1696 582 321 97 NA NA NA

1 9749 2828 2144 1174 407 40 8 NA NA NA

1 16679 12598 1992 767 334 21 7 NA NA NA

1 80500 14393 6414 830 191 34 4 NA NA NA

1 24038 39115 5435 1570 200 45 3 NA NA NA

1 14803 8049 17331 2048 358 53 3 NA NA NA

1 4636 7586 3779 9019 982 94 10 NA NA NA

1 2835 3487 3459 2056 2723 161 38 NA NA NA

1 4585 3367 2565 2149 1215 1267 61 NA NA NA

1 15826 5771 1782 1283 767 429 272 NA NA NA

1 27389 14013 7248 1583 624 389 223 NA NA NA

1 29392 30704 15333 4572 795 261 148 55 55 13

1 28284 24236 25101 7642 1798 242 107 50 61 19

1 16308 11743 13859 10888 2443 264 37 17 12 16

1 31799 6844 7426 5999 2667 485 64 91 8 NA

1 35510 16694 3167 2615 1752 816 79 52 4 4

1 18848 18075 6139 1271 681 514 101 26 2 6

1 24581 13003 11173 2675 456 184 121 33 10 5

1 18279 19511 8290 3796 945 117 44 19 4 1

1 11836 13756 10895 4579 1440 220 32 18 5 2

1 37670 12631 9393 6688 1750 467 102 17 4 4

1 6388 18462 5346 4324 3059 685 165 28 7 2

1 24888 5506 10297 2238 1636 381 92 30 4 10

1 11649 11538 2832 4342 1372 524 136 24 18 18

1 36113 12773 6851 1365 2360 682 230 41 11 10

1 19437 30059 11190 4024 1734 811 179 36 3 3

1 12628 19670 22023 6069 1790 902 524 51 17 7

1 3681 11425 15480 14450 3956 1124 367 160 58 12

1 8540 5037 12970 13866 10351 1637 436 120 82 39

1 7572 6459 3371 9069 13258 4861 902 226 88 111

1 6884 11409 6318 4043 6454 7638 3352 222 287 84

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

FLT15_II: NorBarTrSur_II

2014 2023

1 1 0.085 0.189

3 12

1 22685 9379 8859 5639 3274 5305 3619 981 101 120

1 14407 22825 14729 11353 7443 2922 5351 1808 338 98

1 9937 13548 18831 11347 7233 2856 1317 1606 677 180

1 17925 6215 8454 9016 3782 2633 818 326 261 451

1 13941 18478 6181 6417 7388 2588 928 587 129 419

1 28157 17915 22190 7965 3296 3831 815 262 54 70

1 23773 16024 13156 11488 4983 2426 2044 453 166 243

1 11150 11935 11231 5428 3798 1357 727 353 125 103

1 5198 8868 8660 6651 4460 3042 570 229 208 255

1 4121 3982 4652 4317 3224 1426 749 158 34 35

FLT16: NorBarLofAcSur

1985 2023

1 1 0.085 0.26

3 12

1 1530 1416 204 151 157 33 13 10 5 NA

1 4996 1343 684 116 77 31 3 NA 4 NA

1 628 2049 502 174 14 30 7 NA NA NA

1 504 355 578 109 40 3 0 1 NA NA

1 170 344 214 670 166 32 5 2 NA NA

1 148 206 262 269 668 73 6 3 NA NA

1 502 346 293 339 367 500 37 2 2 NA

1 1765 658 215 184 284 254 824 43 17 NA

1 3572 1911 1131 354 255 252 277 442 49 NA

1 3239 3745 2293 961 234 118 103 42 187 29

1 1377 1395 2036 1016 281 47 45 29 26 81

1 994 896 1128 974 462 59 11 4 9 15

1 1586 442 503 459 510 215 23 7 1 8

1 3912 1898 449 415 349 271 51 10 2 1

1 1476 1303 523 139 118 187 99 10 2 1

1 2948 1673 1492 546 146 69 50 13 6 2

1 1774 1606 851 621 191 27 8 6 3 1

1 614 1062 1011 713 366 94 12 8 6 0

1 3067 1168 1271 1461 677 235 38 4 1 2

1 334 852 349 456 480 217 88 24 2 7

1 1250 333 693 341 438 180 75 18 1 3

1 648 538 186 420 176 159 87 23 3 10

1 585 304 308 129 466 151 80 33 9 4

1 1999 2887 1166 789 248 352 55 28 17 7

1 1078 1825 1415 560 415 128 266 36 17 4

1 228 880 1614 1750 618 314 108 125 40 29

1 404 283 674 1595 2727 645 233 68 75 9

1 828 494 344 895 2266 1335 257 104 38 28

1 606 845 724 541 1336 2338 1617 215 111 88

1 2869 1242 1115 777 553 1490 1739 980 146 105

1 1387 2356 1300 1442 964 498 969 686 325 127

1 563 769 1199 664 594 409 356 565 344 286

1 1115 424 444 742 486 484 268 167 146 230

1 1090 1499 540 584 775 456 193 141 61 137

1 2036 1254 1446 639 493 739 273 218 65 111

1 1173 1173 819 943 506 509 495 195 84 80

1 649 591 558 402 369 163 114 144 82 35

1 294 530 570 504 476 345 116 68 53 39

1 287 265 336 346 278 183 135 32 17 15

FLT18: RusSweptArea

1982 2022

1 1 0.9 1

3 12

1 1413 1525 721 198 551 174 37 19 15.1 1.5

1 520 642 506 358 179 252 94 NA NA NA

1 1189 700 489 357 154 69 61 17 14.6 7.4

1 1188 1592 1068 365 165 37 8 16 1.5 20.9

1 1622 1532 1493 481 189 42 2 6 NA NA

1 557 3076 900 701 184 60 25 4 0.7 3.3

1 993 938 2879 583 260 47 24 NA NA NA

1 490 978 1062 1454 1167 299 112 47 18.5 11.7

1 167 487 627 972 1538 673 153 49 9.1 1.7

1 1077 484 532 583 685 747 98 14 2.6 NA

1 675 308 239 273 218 175 25 25 4.0 0.1

1 1604 1135 681 416 354 87 3 7 0.6 0.7

1 1363 1309 1019 354 128 49 21 11 5.7 2.2

1 589 1065 1395 849 251 83 19 18 9.5 5.8

1 733 784 1035 773 348 132 19 5 12.0 1.6

1 1342 835 613 602 348 116 32 30 NA NA

1 2028 1363 788 470 259 130 48 5 NA 0.9

1 1587 2072 980 301 123 94 42 4 NA NA

1 1839 1286 1786 773 114 52 23 9 3.9 0.4

1 1224 1557 1290 1061 304 50 14 5 25.4 13.1

1 980 1473 1473 896 600 182 29 8 0.8 0.5

1 1246 1057 1166 1203 535 241 40 9 3.1 1.1

1 329 1576 880 1111 776 279 93 23 3.6 2.5

1 1408 631 1832 744 605 244 88 28 6.4 1.1

1 927 1613 777 1801 662 342 161 43 17.5 7.4

1 2579 1617 1903 846 1525 553 226 86 49.0 18.5

1 2203 3088 1635 1472 830 863 291 115 33.0 19.0

1 974 2317 3687 2016 1175 620 413 205 65.0 41.0

1 334 1070 2505 3715 1817 789 395 299 155.9 75.2

1 882 508 1432 3065 3300 917 439 176 175.5 105.4

1 815 1114 839 2122 3358 1878 432 195 45.7 76.3

1 747 1174 1177 884 2349 3132 1367 306 92.4 98.5

1 1399 1368 1725 1483 1111 1929 1297 383 93.4 55.1

1 657 1583 1742 1932 1610 925 1158 761 241.6 113.6

1 NA NA NA NA NA NA NA NA NA NA

1 1456 884 1063 1952 1231 567 266 120 119.8 103.8

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

1 NA NA NA NA NA NA NA NA NA NA

FLT007: Ecosystem_2018corr

2004 2022

1 1 0.65 0.75

3 12

1 1477 4215 1502 798 402 101 22 5 1.3 2

1 2166 558 1009 280 156 57 12 5 1.2 0.5

1 1861 2056 599 698 176 81 26 6 2.5 0.4

1 5862 1592 791 246 269 60 22 9 1.5 2.4

1 6526 4834 1323 511 128 175 33 9 2.3 3.9

1 2023 2806 2896 1017 319 127 73 26 8.1 5.1

1 568 1770 3972 4249 1427 385 105 68 15.9 6.2

1 1236 1015 2402 3004 1784 323 77 18 13.4 8.7

1 2291 1464 700 1508 1652 845 127 44 15.5 20.8

1 2491 1836 1257 632 1182 1302 538 91 33.2 24.6

1 NA NA NA NA NA NA NA NA NA NA

1 1744 2252 1413 726 486 262 353 266 78.7 27

1 772 937 1216 701 444 272 138 132 54.2 30.2

1 3750 1415 1049 1209 626 280 112 64 44.5 71.7

1 NA NA NA NA NA NA NA NA NA NA

1 4166 2323 2151 766 422 444 161 49 21.9 29.5

1 1395 1356 934 829 308 142 107 31 10.3 14.8

1 847 998 811 457 336 124 47 50 23.8 16.8

1 NA NA NA NA NA NA NA NA NA NA

Table 3.14. Parameters settings used in SAM run

# Where a matrix is specified rows corresponds to fleets and columns to ages.

# Same number indicates same parameter used

# Numbers (integers) starts from zero and must be consecutive

#

$minAge

# The minimium age class in the assessment

3

$maxAge

# The maximum age class in the assessment

15

$maxAgePlusGroup

# Is last age group considered a plus group (1 yes, or 0 no).

1 1 1 1 1 1

$keyLogFsta

# Coupling of the fishing mortality states (nomally only first row is used).

0 1 2 3 4 5 6 7 8 9 10 11 11

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

$corFlag

# Correlation of fishing mortality across ages (0 independent, 1 compound symmetry, or 2 AR(1)

0

$keyLogFpar

# Coupling of the survey catchability parameters (nomally first row is not used, as that is covered by fishing mortality).

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

0 1 2 3 4 5 6 7 8 8 -1 -1 -1

9 10 11 12 13 14 15 16 17 17 -1 -1 -1

18 19 20 21 22 23 24 25 26 26 -1 -1 -1

27 28 29 30 31 32 33 34 35 35 -1 -1 -1

36 37 38 39 40 41 42 43 44 44 -1 -1 -1

$keyQpow

# Density dependent catchability power parameters (if any).

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

$keyVarF

# Coupling of process variance parameters for log(F)-process (nomally only first row is used)

0 1 1 1 1 1 1 1 1 1 1 1 1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

$keyVarLogN

# Coupling of process variance parameters for log(N)-process

0 1 1 1 1 1 1 1 1 1 1 1 1

$keyVarObs

# Coupling of the variance parameters for the observations.

0 1 2 2 2 2 2 2 3 3 4 4 4

5 6 6 6 6 7 7 7 7 7 -1 -1 -1

5 6 6 6 6 7 7 7 7 7 -1 -1 -1

8 8 8 8 8 8 9 9 9 9 -1 -1 -1

10 10 10 10 10 10 11 11 11 11 -1 -1 -1

12 12 12 12 12 12 12 12 12 12 -1 -1 -1

$obsCorStruct

# Covariance structure for each fleet ("ID" independent, "AR" AR(1), or "US" for unstructured). | Possible values are: "ID" "AR" "US"

"ID" "AR" "AR" "AR" "AR" "AR"

$keyCorObs

# Coupling of correlation parameters can only be specified if the AR(1) structure is chosen above.

# NA's indicate where correlation parameters can be specified (-1 where they cannot).

#3-4 4-5 5-6 6-7 7-8 8-9 9-10 10-11 11-12 12-13 13-14 14-15

NA NA NA NA NA NA NA NA NA NA NA NA

0 0 0 0 1 1 2 2 3 -1 -1 -1

0 0 0 0 1 1 2 2 3 -1 -1 -1

4 4 4 5 6 6 6 7 8 -1 -1 -1

9 9 9 9 9 10 10 10 11 -1 -1 -1

12 12 12 13 13 13 14 14 15 -1 -1 -1

$stockRecruitmentModelCode

# Stock recruitment code (0 for plain random walk, 1 for Ricker, and 2 for Beverton-Holt).

0

$noScaledYears

# Number of years where catch scaling is applied.

0

$keyScaledYears

# A vector of the years where catch scaling is applied.

$keyParScaledYA

# A matrix specifying the couplings of scale parameters (nrow = no scaled years, ncols = no ages).

$fbarRange

# lowest and higest age included in Fbar

5 10

$keyBiomassTreat

# To be defined only if a biomass survey is used (0 SSB index, 1 catch index, and 2 FSB index).

-1 -1 -1 -1 -1 -1

$obsLikelihoodFlag

# Option for observational likelihood | Possible values are: "LN" "ALN"

"LN" "LN" "LN" "LN" "LN" "LN"

$fixVarToWeight

# If weight attribute is supplied for observations this option sets the treatment (0 relative weight, 1 fix variance to weight).

0

SAM Wed May 31 08:24:02 2023

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp FBAR5-10
1946 0.003 0.020 0.069 0.137 0.270 0.248 0.379 0.396 0.572 0.562 0.626 0.646 0.646 0.250
1947 0.002 0.021 0.090 0.187 0.387 0.294 0.450 0.446 0.692 0.635 0.689 0.781 0.781 0.309
1948 0.001 0.021 0.095 0.220 0.464 0.346 0.512 0.450 0.713 0.694 0.742 0.922 0.922 0.348
1949 0.002 0.030 0.138 0.302 0.473 0.367 0.459 0.476 0.771 0.752 0.788 1.029 1.029 0.369
1950 0.002 0.043 0.163 0.314 0.436 0.363 0.480 0.538 0.839 0.855 0.816 1.151 1.151 0.382
1951 0.009 0.079 0.232 0.343 0.445 0.393 0.496 0.567 0.780 0.866 0.841 1.199 1.199 0.413
1952 0.014 0.104 0.278 0.431 0.476 0.408 0.523 0.639 0.843 0.921 0.844 1.201 1.201 0.459
1953 0.020 0.112 0.251 0.360 0.402 0.373 0.473 0.612 0.813 0.823 0.799 1.021 1.021 0.412
1954 0.017 0.116 0.268 0.383 0.423 0.356 0.489 0.707 0.831 0.822 0.790 0.929 0.929 0.438
1955 0.015 0.108 0.295 0.494 0.497 0.509 0.565 0.751 0.895 0.866 0.790 0.862 0.862 0.519
1956 0.018 0.122 0.350 0.581 0.559 0.599 0.590 0.740 0.892 0.987 0.825 0.804 0.804 0.570
1957 0.021 0.137 0.291 0.529 0.548 0.588 0.536 0.674 0.880 0.914 0.822 0.718 0.718 0.528
1958 0.035 0.181 0.359 0.543 0.540 0.511 0.508 0.692 0.829 0.880 0.720 0.629 0.629 0.526
1959 0.035 0.203 0.426 0.524 0.527 0.527 0.552 0.721 0.786 0.801 0.707 0.643 0.643 0.546
1960 0.036 0.212 0.406 0.509 0.494 0.546 0.523 0.754 0.854 0.802 0.697 0.711 0.711 0.539
1961 0.038 0.225 0.491 0.576 0.546 0.644 0.696 0.849 0.897 0.864 0.741 0.749 0.749 0.634
1962 0.036 0.225 0.584 0.750 0.632 0.683 0.796 1.010 0.935 0.845 0.775 0.738 0.738 0.743
1963 0.024 0.194 0.584 0.800 0.759 0.773 0.893 1.083 1.081 0.851 0.802 0.735 0.735 0.816
1964 0.019 0.159 0.412 0.554 0.585 0.699 0.935 0.883 0.979 0.802 0.882 0.756 0.756 0.678
1965 0.023 0.143 0.365 0.459 0.472 0.589 0.785 0.798 0.804 0.669 0.892 0.759 0.759 0.578
1966 0.031 0.140 0.287 0.388 0.469 0.600 0.752 0.790 0.713 0.655 0.799 0.675 0.675 0.548
1967 0.029 0.155 0.265 0.329 0.463 0.639 0.829 0.811 0.770 0.665 0.793 0.609 0.609 0.556
1968 0.025 0.176 0.356 0.433 0.495 0.632 0.847 0.832 0.747 0.600 0.799 0.631 0.631 0.599
1969 0.026 0.182 0.405 0.483 0.630 0.812 1.006 0.923 0.835 0.631 0.757 0.620 0.620 0.710
1970 0.034 0.164 0.376 0.468 0.589 0.824 0.996 0.933 0.796 0.576 0.712 0.630 0.630 0.698
1971 0.030 0.155 0.306 0.354 0.505 0.809 0.981 0.920 0.801 0.604 0.690 0.616 0.616 0.646
1972 0.051 0.183 0.333 0.402 0.427 0.719 1.059 1.014 0.895 0.652 0.745 0.635 0.635 0.659
1973 0.132 0.226 0.386 0.439 0.459 0.699 0.921 0.860 0.845 0.673 0.756 0.620 0.620 0.627
1974 0.159 0.297 0.482 0.520 0.509 0.622 0.666 0.870 0.910 0.714 0.893 0.628 0.628 0.611
1975 0.115 0.276 0.507 0.622 0.641 0.729 0.721 0.728 0.938 0.778 0.953 0.597 0.597 0.658
1976 0.143 0.307 0.529 0.615 0.687 0.852 0.874 0.672 0.796 0.821 0.942 0.675 0.675 0.705
1977 0.129 0.335 0.634 0.678 0.707 0.901 1.128 0.857 0.894 0.810 1.052 0.810 0.810 0.818
1978 0.110 0.253 0.571 0.737 0.767 0.893 1.219 0.946 1.304 1.008 1.201 0.917 0.917 0.855
1979 0.056 0.202 0.410 0.621 0.711 0.803 1.093 0.992 1.295 1.096 1.125 1.010 1.010 0.772
1980 0.038 0.158 0.345 0.628 0.723 0.809 0.998 1.058 1.230 0.997 1.163 0.907 0.907 0.760
1981 0.032 0.141 0.282 0.581 0.784 0.973 1.160 0.976 1.071 0.937 1.045 0.835 0.835 0.793
1982 0.040 0.158 0.286 0.641 0.841 0.918 1.132 0.826 0.822 0.925 0.866 0.822 0.822 0.774
1983 0.028 0.164 0.300 0.549 0.903 1.079 1.067 0.847 0.713 0.726 0.802 0.866 0.866 0.791
1984 0.024 0.156 0.331 0.582 1.062 1.167 1.168 0.898 0.746 0.701 0.671 0.892 0.892 0.868
1985 0.038 0.161 0.390 0.667 0.944 1.147 0.930 0.778 0.757 0.654 0.593 0.949 0.949 0.809
1986 0.031 0.170 0.455 0.766 0.908 1.141 0.927 1.042 0.887 0.851 0.586 1.073 1.073 0.873
1987 0.039 0.154 0.470 0.827 1.014 1.114 0.894 1.249 0.977 1.003 0.636 1.257 1.257 0.928
1988 0.034 0.127 0.334 0.637 0.936 1.017 1.028 1.355 0.959 0.916 0.731 1.214 1.214 0.885
1989 0.030 0.107 0.251 0.457 0.643 0.833 0.818 1.001 0.753 0.708 0.697 1.432 1.432 0.667
1990 0.020 0.092 0.178 0.308 0.415 0.498 0.548 0.589 0.652 0.610 0.625 1.311 1.311 0.422
1991 0.020 0.101 0.212 0.343 0.434 0.469 0.502 0.481 0.494 0.592 0.570 1.264 1.264 0.407
1992 0.024 0.113 0.280 0.429 0.528 0.554 0.562 0.558 0.515 0.700 0.539 1.253 1.253 0.485
1993 0.014 0.110 0.315 0.523 0.617 0.657 0.692 0.711 0.687 0.826 0.677 1.226 1.226 0.586
1994 0.012 0.109 0.322 0.597 0.924 0.916 0.874 0.851 0.913 0.933 0.777 1.211 1.211 0.748
1995 0.014 0.116 0.323 0.606 0.931 0.895 0.950 0.921 1.010 0.962 0.857 1.123 1.123 0.771
1996 0.021 0.133 0.353 0.618 0.883 0.938 0.853 1.100 0.960 0.960 0.926 1.030 1.030 0.791
1997 0.022 0.168 0.447 0.685 0.895 1.201 1.129 1.268 1.029 1.018 0.924 0.935 0.935 0.937
1998 0.026 0.181 0.474 0.712 0.852 1.159 1.136 1.313 1.051 0.896 0.830 0.784 0.784 0.941
1999 0.015 0.149 0.463 0.682 0.868 1.099 1.223 1.296 0.953 0.880 0.691 0.692 0.692 0.939
2000 0.009 0.114 0.364 0.587 0.830 1.018 1.107 1.181 0.844 0.897 0.551 0.673 0.673 0.848
2001 0.009 0.096 0.293 0.532 0.754 0.924 0.887 1.045 0.730 0.764 0.438 0.706 0.706 0.739
2002 0.008 0.091 0.276 0.521 0.774 0.884 0.836 0.786 0.620 0.723 0.385 0.666 0.666 0.679
2003 0.010 0.089 0.284 0.474 0.727 0.809 0.771 0.736 0.562 0.623 0.356 0.632 0.632 0.634
2004 0.010 0.090 0.293 0.500 0.766 0.854 0.893 0.940 0.627 0.663 0.336 0.527 0.527 0.707
2005 0.011 0.102 0.318 0.517 0.737 0.865 0.949 0.882 0.660 0.730 0.337 0.473 0.473 0.711
2006 0.016 0.102 0.281 0.442 0.617 0.737 0.800 0.781 0.661 0.754 0.362 0.555 0.555 0.610
2007 0.017 0.091 0.241 0.348 0.447 0.540 0.557 0.527 0.631 0.731 0.372 0.477 0.477 0.443
2008 0.011 0.070 0.162 0.276 0.368 0.446 0.483 0.436 0.578 0.683 0.385 0.391 0.391 0.362
2009 0.010 0.058 0.131 0.221 0.317 0.354 0.457 0.368 0.526 0.735 0.424 0.334 0.334 0.308
2010 0.009 0.049 0.106 0.178 0.281 0.377 0.392 0.419 0.594 0.603 0.484 0.307 0.307 0.292
2011 0.006 0.048 0.105 0.160 0.254 0.352 0.446 0.533 0.558 0.507 0.472 0.252 0.252 0.309
2012 0.007 0.047 0.119 0.161 0.241 0.325 0.419 0.482 0.543 0.469 0.446 0.243 0.243 0.291
2013 0.007 0.048 0.122 0.190 0.269 0.362 0.446 0.516 0.556 0.477 0.429 0.268 0.268 0.317
2014 0.008 0.054 0.141 0.229 0.314 0.393 0.420 0.514 0.596 0.521 0.443 0.288 0.288 0.335
2015 0.010 0.056 0.149 0.270 0.325 0.394 0.365 0.503 0.743 0.594 0.471 0.311 0.311 0.334
2016 0.009 0.053 0.149 0.258 0.341 0.418 0.407 0.552 0.829 0.657 0.521 0.345 0.345 0.354
2017 0.010 0.058 0.153 0.274 0.358 0.477 0.474 0.589 0.898 0.735 0.575 0.369 0.369 0.387
2018 0.012 0.061 0.160 0.270 0.370 0.461 0.519 0.641 0.866 0.799 0.624 0.375 0.375 0.404
2019 0.009 0.064 0.161 0.261 0.381 0.502 0.523 0.689 0.815 0.785 0.619 0.355 0.355 0.419
2020 0.010 0.065 0.174 0.293 0.419 0.532 0.611 0.762 0.839 0.764 0.631 0.333 0.333 0.465
2021 0.012 0.069 0.210 0.371 0.503 0.577 0.741 0.867 0.802 0.787 0.649 0.320 0.320 0.545
2022 0.023 0.081 0.240 0.427 0.544 0.575 0.760 0.899 0.847 0.792 0.669 0.285 0.285 0.574
Mean 2020-2022 0.015 0.072 0.208 0.364 0.489 0.562 0.704 0.843 0.829 0.781 0.650 0.313    
Table 3.15. Northeast Arctic cod. Fishing mortality

SAM Wed May 31 08:24:02 2023

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp TOTAL
1946 1131733 675633 371631 171708 78187 84440 227414 80757 36044 30527 18856 8112 1998 2917040
1947 589231 677696 498210 298341 133553 53547 56352 132866 45827 17370 14637 8429 4517 2530580
1948 449846 338009 462717 346413 206946 75360 34959 29936 69670 18420 7655 6075 4972 2050976
1949 626523 291696 264329 354381 229201 104008 42958 16918 15975 28243 7444 3000 3605 1988283
1950 1024221 396052 230628 187516 208593 114814 57062 22810 8662 6120 11072 2741 1938 2272228
1951 2407714 777416 310911 177783 114845 111025 65975 28218 10909 2983 2093 4030 1195 4015099
1952 2328597 1129613 461421 189892 115914 61781 61045 33228 13121 4217 1024 729 1278 4401861
1953 2402267 1115835 638140 245280 90934 60040 33163 28518 13940 4523 1347 356 478 4634820
1954 833170 1382504 709733 387510 137873 48942 34634 17306 12915 5054 1646 496 245 3572028
1955 385036 551772 921576 434864 223730 75020 30565 18107 6940 4694 1836 617 240 2654997
1956 750321 246935 395689 550873 211998 112731 35639 14599 7023 2281 1656 691 298 2330734
1957 1431458 407134 151471 209080 238264 94890 49087 15396 5682 2355 666 595 362 2606441
1958 929503 715984 249912 95908 100409 109310 40962 23270 6425 1911 778 229 381 2274982
1959 1312954 486784 428640 141285 47151 47654 54776 20181 9514 2299 639 319 268 2552463
1960 1476784 626020 253474 207916 69451 23063 22980 25331 8045 3643 862 256 261 2718086
1961 1544518 706397 348084 134365 102607 36315 11330 12030 9809 2788 1373 361 209 2910186
1962 1247843 810279 391328 168723 64372 49248 15634 4561 4401 3278 942 540 221 2761370
1963 907862 702264 455812 165768 62748 28831 20761 5759 1329 1467 1160 351 300 2354411
1964 473547 411911 369740 179218 54781 21590 10562 6923 1519 351 514 432 257 1531345
1965 878677 250947 259257 200151 83072 23769 8197 3218 2387 451 123 172 266 1710686
1966 1839953 566724 166875 144844 106301 44083 10954 3045 1179 894 192 39 163 2885247
1967 1308974 1270075 396538 106241 80547 55334 20430 4379 1136 492 388 73 82 3244689
1968 182936 1012919 889833 279771 72366 42267 23741 7296 1619 422 206 146 70 2513591
1969 111045 137847 703205 495219 154584 41086 19635 8557 2640 651 194 75 95 1674832
1970 206796 86222 88133 369028 238174 64447 15108 5826 2766 915 281 75 75 1077846
1971 406737 146005 58021 45451 174361 103279 22554 4582 1861 1030 428 113 65 964488
1972 1052751 313730 105276 37348 27279 81763 36126 6972 1529 696 466 181 80 1664197
1973 1700149 752642 212581 63905 21243 15869 32382 9734 1981 500 297 180 114 2811577
1974 565981 1199076 516131 123124 35403 11334 6623 10170 3409 701 207 118 131 2472409
1975 610161 367082 669058 258350 61584 18470 5370 3072 3311 1119 283 68 109 1998039
1976 599582 445367 227371 311620 108455 26035 7503 2269 1299 1003 417 88 82 1731092
1977 372307 413520 273382 112894 137056 43303 8837 2627 1047 523 348 136 73 1366052
1978 621548 248002 218201 112400 47570 55763 14037 2250 897 384 207 98 77 1321434
1979 204031 447468 155572 90733 40802 17638 18405 3267 697 186 116 51 57 979024
1980 131519 156119 301689 87290 39224 16108 6538 5040 981 154 48 31 31 744773
1981 144577 103399 112934 174490 38101 15659 6034 2072 1396 231 47 12 20 598971
1982 181947 125849 83720 63807 81820 15244 4646 1519 641 380 74 13 11 559671
1983 140981 136621 92220 51873 28853 28271 4904 1236 568 230 118 26 9 485909
1984 443366 115166 83583 54126 24632 10647 7717 1355 439 242 95 42 12 741422
1985 529829 386960 82188 44974 24294 6367 2802 1913 439 166 100 41 18 1080092
1986 1369810 404115 244534 46407 19160 7428 1602 1008 752 176 73 47 19 2095132
1987 357271 1003120 256345 109639 16450 6830 1791 573 288 255 62 35 19 1752678
1988 334096 239244 593379 118927 33012 5010 1737 626 134 90 73 27 12 1326366
1989 158520 229171 148275 304719 55009 9890 1481 486 126 40 29 27 10 907782
1990 132388 129404 130196 95726 141754 22871 2912 534 137 48 16 11 7 656006
1991 298599 127183 98217 86322 61802 82032 11465 1379 248 55 22 7 4 767335
1992 714479 272249 101315 69273 48838 33923 46509 6071 804 133 25 10 3 1293632
1993 988559 503887 241252 72838 36823 23579 15521 23979 3036 433 57 13 3 1909981
1994 749508 733437 399593 146862 39060 15948 10655 6383 9806 1322 160 24 4 2112761
1995 537661 491903 524087 231718 63033 12467 5313 3432 2213 3219 423 60 7 1875535
1996 402269 303401 336209 282689 104036 19820 4290 1582 1116 619 1015 146 18 1457210
1997 777417 208466 204625 182595 120012 37500 6304 1646 437 338 193 331 48 1539912
1998 1048459 474057 126705 97658 70885 41679 9505 1624 357 130 95 61 120 1871335
1999 626609 600821 263885 62320 32893 26063 11630 2519 344 98 45 33 68 1627328
2000 747832 410172 376156 122289 24439 11231 7416 2645 581 108 33 19 42 1702963
2001 591465 534376 291579 184953 51964 8994 3405 1934 666 200 35 15 26 1669610
2002 374563 431027 368728 186325 82226 20349 3103 1180 566 251 78 18 16 1468429
2003 757474 288017 288349 235608 84433 30290 6755 1135 443 264 97 45 15 1692924
2004 242780 576499 215269 182819 116290 33915 10947 2632 480 224 126 55 26 1382062
2005 694272 185973 407128 136541 94341 39218 11228 3947 830 209 98 79 39 1573903
2006 538504 468505 141602 232380 68783 34037 13635 3369 1329 367 82 60 67 1502721
2007 1254871 438706 305334 89262 120284 30388 12668 4550 1192 563 145 46 61 2258070
2008 1016970 975177 337094 168663 53076 63107 15599 5733 1975 543 217 83 54 2638292
2009 590980 796014 744747 249883 89831 33782 29123 7943 3097 953 230 119 76 2546778
2010 205517 460527 655384 551852 168890 54623 19139 14872 4690 1636 359 126 116 2137732
2011 363991 183782 382476 538159 390293 86742 31659 10764 8249 2066 769 170 145 1999266
2012 510052 278762 148241 317718 407445 221791 45411 16283 5363 3915 1024 402 198 1956605
2013 471175 373062 228367 129650 243097 266376 137266 23598 8687 2521 2017 537 401 1886756
2014 854919 359921 300489 183506 102327 170876 148350 66608 11488 3964 1261 1075 595 2205379
2015 452525 573731 302681 215298 132913 68513 98660 76074 31250 5350 1889 658 1029 1960571
2016 285806 315948 421706 217130 136747 77157 44556 54447 35594 12006 2412 956 1011 1605476
2017 770881 239473 229268 288934 147668 79496 41771 24722 23820 13050 5079 1171 1121 1866455
2018 492321 537046 189041 160875 187195 87126 40711 22204 11204 7703 5006 2296 1256 1743985
2019 635422 366241 388948 150117 92605 108623 47097 19994 9516 3906 2717 2114 1886 1829186
2020 540952 427462 278103 251123 101787 54624 56075 23179 8608 3492 1462 1175 2134 1750176
2021 386652 351033 316485 192576 147936 53767 27411 24797 9551 3085 1351 638 1823 1517106
2022 197418 265615 256531 195573 116257 75151 23979 10870 8235 3444 1155 584 1376 1156188
2023   150647 184991 159696 104371 54409 35086 9129 3602 2802 1259 481 1190 895555
Table 3.16. Northeast Arctic COD Stock number-at-age (Thous)

SAM Wed May 31 08:24:02 2023

Year_age 3 4 5 6 7 8 9 10 11 12 13 14 +gp
1946 0.490 0.304 0.226 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1947 0.544 0.325 0.231 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1948 0.493 0.305 0.226 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1949 0.434 0.282 0.221 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1950 0.316 0.236 0.210 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1951 0.724 0.394 0.247 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1952 0.715 0.391 0.246 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1953 0.537 0.322 0.230 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1954 0.388 0.264 0.217 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1955 0.406 0.271 0.218 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1956 0.590 0.343 0.235 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1957 0.725 0.395 0.247 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1958 0.562 0.332 0.233 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1959 0.713 0.390 0.246 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1960 0.704 0.387 0.245 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1961 0.609 0.350 0.237 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1962 0.520 0.315 0.229 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1963 0.788 0.419 0.253 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1964 0.603 0.348 0.236 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1965 0.416 0.275 0.219 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1966 0.353 0.251 0.214 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1967 0.271 0.219 0.206 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1968 0.224 0.201 0.202 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1969 0.206 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1970 0.293 0.227 0.208 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1971 0.256 0.213 0.205 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1972 0.323 0.239 0.211 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1973 0.217 0.200 0.201 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1974 0.217 0.200 0.201 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1975 0.232 0.204 0.203 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1976 0.224 0.200 0.202 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1977 0.249 0.210 0.204 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1978 0.234 0.205 0.203 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1979 0.208 0.200 0.201 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1980 0.200 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1981 0.200 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1982 0.200 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1983 0.203 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1984 0.201 0.200 0.219 0.210 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1985 0.204 0.224 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1986 0.270 0.216 0.252 0.231 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1987 0.256 0.236 0.219 0.271 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1988 0.222 0.211 0.242 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1989 0.200 0.230 0.200 0.233 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1990 0.200 0.200 0.207 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1991 0.200 0.200 0.200 0.208 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1992 0.207 0.200 0.200 0.203 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1993 0.241 0.200 0.200 0.200 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1994 0.348 0.261 0.215 0.220 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1995 0.530 0.314 0.227 0.202 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1996 0.524 0.327 0.243 0.217 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1997 0.421 0.269 0.241 0.226 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1998 0.428 0.273 0.218 0.267 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
1999