| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1407 | 546 | 215 | 97 | 8 | 1 | 0 | 0 | 0 |
| 2001 | 1762 | 1152 | 441 | 118 | 13 | 2 | 0 | 0 | 0 |
| 2002 | 2089 | 1443 | 930 | 242 | 16 | 3 | 1 | 0 | 0 |
| 2003 | 1732 | 1711 | 1165 | 505 | 33 | 4 | 1 | 0 | 0 |
| 2004 | 2111 | 1418 | 1382 | 639 | 62 | 8 | 1 | 1 | 0 |
| 2005 | 4442 | 1728 | 1145 | 756 | 78 | 15 | 2 | 0 | 0 |
| 2006 | 3277 | 3637 | 1396 | 631 | 109 | 19 | 5 | 1 | 0 |
| 2007 | 3580 | 2682 | 2942 | 786 | 116 | 28 | 8 | 3 | 0 |
| 2008 | 2798 | 2931 | 2172 | 1727 | 155 | 31 | 11 | 4 | 1 |
| 2009 | 3690 | 2291 | 2377 | 1333 | 372 | 41 | 13 | 6 | 2 |
| 2010 | 4336 | 3021 | 1860 | 1544 | 367 | 101 | 18 | 7 | 3 |
| 2011 | 16508 | 3549 | 2457 | 1260 | 551 | 110 | 45 | 9 | 4 |
| 2012 | 15108 | 13518 | 2889 | 1722 | 516 | 188 | 50 | 21 | 6 |
| 2013 | 12828 | 12369 | 11013 | 2100 | 887 | 197 | 88 | 26 | 11 |
| 2014 | 10156 | 10503 | 10090 | 8146 | 1193 | 390 | 86 | 40 | 13 |
| 2015 | 7729 | 8315 | 8575 | 7604 | 4757 | 547 | 173 | 31 | 14 |
| 2016 | 9077 | 6327 | 6792 | 6447 | 4413 | 2109 | 223 | 65 | 13 |
| 2017 | 7915 | 7432 | 5167 | 5072 | 3585 | 1973 | 750 | 87 | 30 |
| 2018 | 11049 | 6480 | 6072 | 3844 | 2782 | 1549 | 667 | 230 | 37 |
| 2019 | 13868 | 9047 | 5293 | 4520 | 2040 | 1185 | 490 | 171 | 66 |
| 2020 | 8779 | 11357 | 7390 | 3979 | 2476 | 812 | 421 | 130 | 67 |
| 2021 | 16331 | 7187 | 9280 | 5598 | 2313 | 1107 | 311 | 142 | 62 |
| 2022 | 11828 | 13373 | 5872 | 7056 | 3428 | 1206 | 505 | 127 | 78 |
| 2023 | 13034 | 9684 | 10921 | 4409 | 4433 | 1919 | 614 | 232 | 90 |
| 2024 | 8338 | 10673 | 7901 | 7932 | 2779 | 2498 | 979 | 297 | 164 |
| 2025 | 7554 | 6827 | 8707 | 5647 | 4783 | 1588 | 1255 | 469 | 201 |