| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1159 | 482 | 146 | 74 | 6 | 1 | 0 | 0 | 0 |
| 2001 | 1616 | 949 | 387 | 79 | 21 | 3 | 1 | 0 | 0 |
| 2002 | 1609 | 1323 | 758 | 193 | 18 | 8 | 1 | 0 | 0 |
| 2003 | 1564 | 1318 | 1056 | 369 | 43 | 6 | 4 | 1 | 0 |
| 2004 | 2084 | 1280 | 1045 | 452 | 53 | 9 | 2 | 1 | 0 |
| 2005 | 5092 | 1706 | 1012 | 423 | 66 | 10 | 2 | 0 | 0 |
| 2006 | 3304 | 4170 | 1345 | 391 | 61 | 14 | 3 | 1 | 0 |
| 2007 | 3388 | 2705 | 3332 | 693 | 117 | 26 | 8 | 1 | 0 |
| 2008 | 2677 | 2774 | 2157 | 1567 | 141 | 34 | 10 | 3 | 0 |
| 2009 | 3475 | 2191 | 2218 | 1034 | 276 | 34 | 13 | 5 | 1 |
| 2010 | 4335 | 2845 | 1774 | 1400 | 385 | 107 | 18 | 8 | 3 |
| 2011 | 15634 | 3549 | 2309 | 1169 | 540 | 129 | 48 | 9 | 5 |
| 2012 | 15558 | 12802 | 2886 | 1572 | 484 | 179 | 56 | 23 | 6 |
| 2013 | 13861 | 12738 | 10433 | 2117 | 876 | 226 | 96 | 32 | 14 |
| 2014 | 11334 | 11349 | 10396 | 7797 | 1249 | 414 | 109 | 46 | 18 |
| 2015 | 8348 | 9281 | 9274 | 7964 | 4775 | 576 | 167 | 33 | 13 |
| 2016 | 9787 | 6834 | 7584 | 7055 | 4731 | 2101 | 228 | 60 | 13 |
| 2017 | 7900 | 8014 | 5582 | 5716 | 4060 | 2181 | 879 | 100 | 33 |
| 2018 | 10722 | 6467 | 6548 | 4177 | 3186 | 1721 | 741 | 263 | 40 |
| 2019 | 13796 | 8780 | 5284 | 4875 | 2214 | 1252 | 484 | 155 | 59 |
| 2020 | 8979 | 11299 | 7173 | 3953 | 2652 | 877 | 418 | 132 | 58 |
| 2021 | 15975 | 7350 | 9235 | 5428 | 2318 | 1217 | 343 | 149 | 64 |
| 2022 | 10537 | 13082 | 6010 | 7157 | 3602 | 1362 | 653 | 173 | 103 |
| 2023 | 10807 | 8626 | 10688 | 4568 | 4704 | 2188 | 789 | 369 | 157 |
| 2024 | 7528 | 8849 | 7032 | 7657 | 2810 | 2730 | 1243 | 472 | 338 |
| 2025 | 7195 | 6163 | 7203 | 4801 | 4291 | 1523 | 1379 | 653 | 453 |