| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1784 | 811 | 170 | 84 | 5 | 1 | 0 | 0 | 0 |
| 2001 | 1434 | 1461 | 662 | 93 | 20 | 2 | 0 | 0 | 0 |
| 2002 | 2227 | 1174 | 1180 | 342 | 21 | 7 | 1 | 0 | 0 |
| 2003 | 1907 | 1823 | 904 | 563 | 62 | 7 | 3 | 0 | 0 |
| 2004 | 2108 | 1561 | 1408 | 455 | 71 | 20 | 3 | 1 | 0 |
| 2005 | 3757 | 1726 | 1089 | 578 | 42 | 23 | 8 | 1 | 0 |
| 2006 | 3468 | 3076 | 1092 | 366 | 61 | 14 | 9 | 3 | 0 |
| 2007 | 2943 | 2840 | 2079 | 328 | 57 | 20 | 6 | 4 | 1 |
| 2008 | 2745 | 2409 | 1977 | 892 | 60 | 19 | 8 | 2 | 1 |
| 2009 | 2685 | 2248 | 1842 | 958 | 237 | 20 | 8 | 3 | 1 |
| 2010 | 4385 | 2198 | 1782 | 1120 | 315 | 80 | 8 | 3 | 1 |
| 2011 | 8718 | 3591 | 1784 | 1200 | 460 | 106 | 32 | 3 | 1 |
| 2012 | 10231 | 7138 | 2921 | 1215 | 517 | 157 | 41 | 13 | 1 |
| 2013 | 10891 | 8378 | 5794 | 2083 | 608 | 180 | 60 | 17 | 4 |
| 2014 | 7639 | 8918 | 6829 | 4194 | 1150 | 215 | 68 | 24 | 5 |
| 2015 | 6993 | 6254 | 7289 | 5078 | 2244 | 408 | 79 | 26 | 8 |
| 2016 | 8498 | 5725 | 5114 | 5373 | 2663 | 786 | 146 | 30 | 9 |
| 2017 | 4532 | 6958 | 4682 | 3670 | 2313 | 920 | 270 | 54 | 11 |
| 2018 | 8110 | 3710 | 5689 | 3304 | 1371 | 779 | 309 | 96 | 17 |
| 2019 | 6467 | 6640 | 3034 | 4018 | 1254 | 457 | 259 | 108 | 31 |
| 2020 | 5941 | 5295 | 5426 | 2167 | 1745 | 422 | 154 | 90 | 38 |
| 2021 | 14815 | 4864 | 4325 | 3946 | 977 | 602 | 145 | 54 | 35 |
| 2022 | 5866 | 12132 | 3978 | 3102 | 1866 | 345 | 212 | 52 | 25 |
| 2023 | 8046 | 4802 | 9897 | 2722 | 1407 | 673 | 126 | 76 | 22 |
| 2024 | 7242 | 6588 | 3887 | 6262 | 1279 | 509 | 246 | 45 | 28 |
| 2025 | 7294 | 5929 | 5335 | 2281 | 2705 | 467 | 184 | 89 | 21 |