| Table 3. Estimated stock numbers at age. | |||||||
| Year Age | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 1980 | 53377 | 33496 | 8419 | 1830 | 1355 | 402 | 1425 |
| 1981 | 32651 | 37809 | 20012 | 4128 | 926 | 780 | 1274 |
| 1982 | 52731 | 21906 | 23259 | 7817 | 1737 | 528 | 1316 |
| 1983 | 46794 | 37096 | 12731 | 9543 | 2981 | 904 | 1179 |
| 1984 | 61668 | 31822 | 21989 | 5096 | 3797 | 1588 | 1310 |
| 1985 | 71208 | 42510 | 18631 | 8192 | 1867 | 1917 | 1675 |
| 1986 | 125314 | 48325 | 22508 | 6837 | 3116 | 1062 | 2110 |
| 1987 | 78686 | 89576 | 25749 | 7477 | 2566 | 1533 | 1961 |
| 1988 | 52640 | 54982 | 52260 | 9793 | 2905 | 1293 | 2048 |
| 1989 | 34935 | 36884 | 31275 | 20882 | 3912 | 1409 | 1855 |
| 1990 | 41115 | 23598 | 20908 | 12619 | 8352 | 1748 | 1737 |
| 1991 | 53441 | 26754 | 12304 | 7712 | 5200 | 3755 | 1767 |
| 1992 | 64796 | 34312 | 10835 | 3992 | 2995 | 2455 | 2871 |
| 1993 | 34572 | 41918 | 14275 | 3608 | 1760 | 1522 | 2961 |
| 1994 | 34965 | 22065 | 18777 | 5700 | 1782 | 988 | 2731 |
| 1995 | 60517 | 20988 | 9264 | 6309 | 2342 | 884 | 2098 |
| 1996 | 65146 | 39355 | 8859 | 3307 | 2664 | 1202 | 1701 |
| 1997 | 87128 | 41574 | 19374 | 3072 | 1342 | 1192 | 1513 |
| 1998 | 39153 | 59605 | 21011 | 5878 | 866 | 479 | 1169 |
| 1999 | 44772 | 24529 | 35044 | 7884 | 1968 | 392 | 870 |
| 2000 | 38718 | 29361 | 13264 | 13171 | 2727 | 855 | 678 |
| 2001 | 39646 | 24994 | 12559 | 4927 | 5644 | 1384 | 897 |
| 2002 | 52463 | 24294 | 10974 | 4082 | 2173 | 3239 | 1433 |
| 2003 | 30257 | 34517 | 9375 | 3433 | 1569 | 1091 | 2522 |
| 2004 | 35455 | 19998 | 16627 | 3810 | 1643 | 842 | 2106 |
| 2005 | 29771 | 23165 | 9796 | 6349 | 1676 | 831 | 1524 |
| 2006 | 30389 | 19985 | 11169 | 3955 | 2818 | 812 | 1223 |
| 2007 | 40493 | 19739 | 9848 | 4679 | 1954 | 1566 | 1235 |
| 2008 | 38518 | 26617 | 8713 | 3787 | 2212 | 1035 | 1621 |
| 2009 | 65169 | 25158 | 12642 | 3490 | 1799 | 1186 | 1601 |
| 2010 | 97479 | 43292 | 12859 | 5226 | 1704 | 1007 | 1729 |
| 2011 | 104831 | 64842 | 21286 | 5228 | 2418 | 909 | 1617 |
| 2012 | 66989 | 72355 | 38236 | 11461 | 3041 | 1533 | 1723 |
| 2013 | 79685 | 44609 | 46860 | 21776 | 6467 | 1871 | 2151 |
| 2014 | 115976 | 54866 | 27108 | 28006 | 12703 | 3927 | 2624 |
| 2015 | 90635 | 79163 | 34214 | 16394 | 17008 | 8113 | 4661 |
| 2016 | 73528 | 63060 | 49416 | 19138 | 9576 | 10226 | 8273 |
| 2017 | 73398 | 51283 | 39043 | 27585 | 10323 | 5403 | 11588 |
| 2018 | 70298 | 48781 | 31847 | 22314 | 14538 | 5622 | 10541 |
| 2019 | 92988 | 47616 | 28832 | 16142 | 10167 | 6638 | 8840 |
| 2020 | 57960 | 59909 | 28389 | 14431 | 8054 | 4954 | 8706 |
| 2021 | 47700 | 38838 | 38700 | 17463 | 7773 | 4251 | 7916 |
| 2022 | 68811 | 28802 | 21989 | 21008 | 8357 | 3548 | 6637 |
| 2023 | 43429 | 42257 | 14541 | 10062 | 8965 | 3885 | 6037 |
| 2024 | 52556 | 27332 | 25184 | 7067 | 4578 | 4243 | 6238 |
| 2025 | 65433 | 35132 | 16360 | 14360 | 3469 | 2208 | 6532 |