| Table 3. Estimated stock numbers at age. | ||||||||
| Year Age | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 156 | 126 | 76 | 5 | 1 | 0 | 0 | 0 |
| 2001 | 250 | 127 | 60 | 14 | 2 | 0 | 0 | 0 |
| 2002 | 298 | 202 | 60 | 12 | 5 | 1 | 0 | 0 |
| 2003 | 246 | 238 | 99 | 14 | 4 | 2 | 0 | 0 |
| 2004 | 473 | 196 | 127 | 27 | 4 | 2 | 1 | 0 |
| 2005 | 954 | 376 | 91 | 34 | 9 | 2 | 1 | 0 |
| 2006 | 2420 | 751 | 158 | 22 | 12 | 4 | 1 | 0 |
| 2007 | 3091 | 1899 | 257 | 33 | 8 | 6 | 2 | 0 |
| 2008 | 2735 | 2458 | 701 | 30 | 11 | 4 | 2 | 1 |
| 2009 | 1393 | 2188 | 1176 | 113 | 7 | 5 | 1 | 1 |
| 2010 | 2724 | 1121 | 1263 | 335 | 28 | 3 | 2 | 1 |
| 2011 | 2299 | 2204 | 719 | 471 | 84 | 12 | 1 | 1 |
| 2012 | 3013 | 1866 | 1431 | 287 | 123 | 34 | 5 | 1 |
| 2013 | 3680 | 2449 | 1236 | 606 | 82 | 47 | 13 | 2 |
| 2014 | 5030 | 3003 | 1643 | 590 | 180 | 30 | 18 | 5 |
| 2015 | 5003 | 4110 | 2158 | 782 | 208 | 65 | 11 | 8 |
| 2016 | 5641 | 4090 | 3014 | 1032 | 273 | 74 | 25 | 7 |
| 2017 | 6800 | 4611 | 3067 | 1496 | 397 | 99 | 28 | 11 |
| 2018 | 5469 | 5561 | 3520 | 1696 | 640 | 132 | 37 | 13 |
| 2019 | 5655 | 4472 | 4223 | 1922 | 683 | 179 | 48 | 17 |
| 2020 | 6470 | 4625 | 3343 | 2280 | 704 | 188 | 65 | 22 |
| 2021 | 4343 | 5290 | 3435 | 1858 | 960 | 222 | 68 | 30 |
| 2022 | 6689 | 3553 | 4002 | 2017 | 942 | 380 | 80 | 34 |
| 2023 | 2982 | 5472 | 2733 | 2394 | 1080 | 403 | 138 | 39 |
| 2024 | 1697 | 2439 | 4112 | 1649 | 1222 | 444 | 147 | 62 |
| 2025 | 1141 | 1388 | 1847 | 2438 | 864 | 461 | 162 | 72 |