| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1996 | 1652 | 1953 | 2267 | 2321 | 1851 | 1000 | 441 | 184 | 75 | 119 |
| 1997 | 1914 | 1410 | 1645 | 1830 | 1700 | 1165 | 583 | 235 | 92 | 107 |
| 1998 | 2852 | 1654 | 1210 | 1333 | 1383 | 1105 | 677 | 300 | 112 | 105 |
| 1999 | 2995 | 2438 | 1433 | 1026 | 997 | 872 | 605 | 310 | 125 | 101 |
| 2000 | 2963 | 2543 | 2077 | 1234 | 797 | 597 | 432 | 247 | 114 | 94 |
| 2001 | 2619 | 2552 | 2159 | 1715 | 987 | 528 | 318 | 193 | 107 | 100 |
| 2002 | 2580 | 2253 | 2177 | 1813 | 1335 | 667 | 314 | 158 | 91 | 110 |
| 2003 | 2772 | 2232 | 1928 | 1811 | 1419 | 889 | 406 | 180 | 86 | 121 |
| 2004 | 3098 | 2387 | 1925 | 1598 | 1338 | 878 | 491 | 211 | 96 | 119 |
| 2005 | 3919 | 2649 | 2007 | 1553 | 1135 | 742 | 431 | 228 | 98 | 113 |
| 2006 | 3751 | 3375 | 2225 | 1590 | 1103 | 637 | 368 | 196 | 102 | 103 |
| 2007 | 3637 | 3225 | 2823 | 1787 | 1132 | 633 | 320 | 169 | 82 | 94 |
| 2008 | 3916 | 3098 | 2693 | 2241 | 1271 | 659 | 337 | 156 | 80 | 90 |
| 2009 | 3973 | 3370 | 2604 | 2176 | 1615 | 806 | 386 | 179 | 77 | 91 |
| 2010 | 3257 | 3451 | 2850 | 2169 | 1648 | 1020 | 481 | 204 | 86 | 86 |
| 2011 | 2200 | 2823 | 2989 | 2364 | 1686 | 1083 | 588 | 241 | 94 | 83 |
| 2012 | 2597 | 1860 | 2430 | 2487 | 1817 | 1109 | 632 | 278 | 107 | 83 |
| 2013 | 4650 | 2188 | 1544 | 2035 | 1920 | 1143 | 607 | 267 | 107 | 80 |
| 2014 | 4626 | 4095 | 1853 | 1306 | 1610 | 1432 | 727 | 329 | 138 | 99 |
| 2015 | 4185 | 3962 | 3551 | 1524 | 973 | 1000 | 785 | 253 | 129 | 98 |
| 2016 | 4335 | 3536 | 3371 | 2824 | 1161 | 625 | 569 | 333 | 112 | 104 |
| 2017 | 3539 | 3757 | 2946 | 2716 | 2101 | 803 | 384 | 300 | 182 | 119 |
| 2018 | 1792 | 3124 | 3220 | 2423 | 2098 | 1467 | 528 | 227 | 187 | 185 |
| 2019 | 1221 | 1529 | 2725 | 2696 | 1959 | 1437 | 999 | 325 | 148 | 233 |
| 2020 | 1093 | 1042 | 1319 | 2283 | 2119 | 1381 | 870 | 536 | 190 | 205 |
| 2021 | 1015 | 937 | 868 | 1130 | 1741 | 1343 | 795 | 384 | 270 | 171 |
| 2022 | 1589 | 865 | 806 | 715 | 871 | 1123 | 756 | 396 | 199 | 186 |
| 2023 | 1787 | 1383 | 750 | 676 | 548 | 595 | 662 | 377 | 222 | 169 |
| 2024 | 1295 | 1556 | 1212 | 621 | 509 | 351 | 360 | 341 | 210 | 172 |
| 2025 | 1652 | 1117 | 1345 | 1029 | 481 | 336 | 217 | 196 | 190 | 156 |