| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 1984 | 6310 | 2686 | 1673 | 499 | 375 | 122 | 78 | 128 | 471 |
| 1985 | 5128 | 5872 | 2402 | 926 | 244 | 229 | 82 | 47 | 361 |
| 1986 | 4849 | 4546 | 4865 | 1734 | 628 | 154 | 150 | 60 | 271 |
| 1987 | 4309 | 4424 | 3775 | 3168 | 1031 | 402 | 108 | 95 | 217 |
| 1988 | 5942 | 3674 | 3846 | 2672 | 1813 | 505 | 206 | 64 | 182 |
| 1989 | 7618 | 5430 | 2696 | 2614 | 1670 | 1156 | 283 | 118 | 148 |
| 1990 | 7576 | 7133 | 4486 | 1819 | 1616 | 996 | 699 | 157 | 152 |
| 1991 | 8841 | 6709 | 5612 | 2848 | 1088 | 960 | 630 | 444 | 192 |
| 1992 | 6703 | 8480 | 5461 | 3563 | 1558 | 656 | 529 | 357 | 376 |
| 1993 | 3569 | 6363 | 7241 | 3772 | 2265 | 872 | 341 | 278 | 374 |
| 1994 | 3590 | 2963 | 5427 | 5152 | 2343 | 1375 | 395 | 180 | 322 |
| 1995 | 2195 | 3474 | 2599 | 4126 | 3324 | 1516 | 858 | 238 | 312 |
| 1996 | 1489 | 1959 | 3061 | 1817 | 2514 | 1774 | 918 | 484 | 351 |
| 1997 | 3705 | 1130 | 1364 | 1772 | 1225 | 1516 | 1106 | 640 | 541 |
| 1998 | 3580 | 3810 | 847 | 916 | 1047 | 766 | 846 | 715 | 739 |
| 1999 | 2973 | 3306 | 3745 | 593 | 723 | 622 | 510 | 511 | 898 |
| 2000 | 4224 | 2502 | 2668 | 2529 | 418 | 493 | 367 | 340 | 927 |
| 2001 | 5628 | 3855 | 2063 | 1945 | 1444 | 289 | 376 | 197 | 839 |
| 2002 | 4234 | 5502 | 3592 | 1385 | 1449 | 1045 | 214 | 248 | 729 |
| 2003 | 4276 | 3681 | 4059 | 2569 | 983 | 1026 | 558 | 112 | 560 |
| 2004 | 2694 | 4124 | 3681 | 3101 | 1605 | 697 | 540 | 314 | 389 |
| 2005 | 2344 | 2535 | 4132 | 3454 | 2083 | 888 | 344 | 276 | 314 |
| 2006 | 2932 | 2208 | 2127 | 3240 | 2242 | 1389 | 472 | 212 | 391 |
| 2007 | 3260 | 2507 | 1850 | 1577 | 2195 | 1218 | 790 | 320 | 470 |
| 2008 | 2263 | 3036 | 1850 | 1381 | 1086 | 1516 | 771 | 531 | 549 |
| 2009 | 2171 | 2173 | 2608 | 1297 | 1047 | 740 | 1034 | 493 | 675 |
| 2010 | 1883 | 1985 | 2041 | 1750 | 794 | 706 | 508 | 770 | 878 |
| 2011 | 1626 | 1720 | 1832 | 1500 | 1145 | 520 | 489 | 317 | 1178 |
| 2012 | 1363 | 1468 | 1418 | 1358 | 909 | 835 | 360 | 376 | 1118 |
| 2013 | 1368 | 1204 | 1336 | 1190 | 1006 | 643 | 679 | 259 | 1048 |
| 2014 | 2199 | 1162 | 1019 | 970 | 862 | 769 | 401 | 577 | 950 |
| 2015 | 2651 | 1992 | 1002 | 894 | 622 | 722 | 492 | 290 | 1363 |
| 2016 | 2254 | 2461 | 1988 | 850 | 843 | 391 | 471 | 349 | 1367 |
| 2017 | 1324 | 2301 | 2214 | 1629 | 620 | 712 | 266 | 303 | 1324 |
| 2018 | 3104 | 975 | 1945 | 1836 | 1089 | 383 | 499 | 191 | 1145 |
| 2019 | 2244 | 2876 | 663 | 1580 | 1309 | 696 | 225 | 335 | 982 |
| 2020 | 1899 | 2010 | 2337 | 497 | 1071 | 992 | 508 | 141 | 992 |
| 2021 | 1044 | 1619 | 1726 | 1520 | 347 | 645 | 667 | 338 | 771 |
| 2022 | 952 | 932 | 1178 | 1407 | 1044 | 246 | 439 | 503 | 804 |
| 2023 | 724 | 864 | 840 | 880 | 996 | 710 | 175 | 298 | 959 |
| 2024 | 1420 | 631 | 722 | 662 | 674 | 739 | 536 | 131 | 969 |
| 2025 | 1739 | 1335 | 562 | 565 | 517 | 543 | 577 | 431 | 859 |