| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1819 | 1046 | 265 | 113 | 9 | 1 | 0 | 0 | 0 |
| 2001 | 1930 | 1489 | 848 | 152 | 16 | 2 | 0 | 0 | 0 |
| 2002 | 2426 | 1580 | 1206 | 485 | 21 | 3 | 1 | 0 | 0 |
| 2003 | 2046 | 1986 | 1279 | 682 | 62 | 4 | 1 | 0 | 0 |
| 2004 | 2285 | 1675 | 1608 | 726 | 82 | 10 | 1 | 0 | 0 |
| 2005 | 3341 | 1871 | 1356 | 910 | 81 | 14 | 3 | 0 | 0 |
| 2006 | 3535 | 2735 | 1515 | 766 | 130 | 15 | 5 | 1 | 0 |
| 2007 | 3349 | 2895 | 2216 | 865 | 149 | 28 | 6 | 2 | 0 |
| 2008 | 3070 | 2742 | 2347 | 1306 | 179 | 37 | 11 | 3 | 1 |
| 2009 | 3421 | 2514 | 2226 | 1444 | 309 | 46 | 16 | 5 | 1 |
| 2010 | 4891 | 2801 | 2043 | 1442 | 418 | 91 | 21 | 8 | 3 |
| 2011 | 14085 | 4003 | 2279 | 1378 | 507 | 135 | 42 | 10 | 4 |
| 2012 | 13105 | 11535 | 3260 | 1586 | 555 | 176 | 64 | 19 | 6 |
| 2013 | 13557 | 10729 | 9399 | 2360 | 787 | 212 | 85 | 33 | 10 |
| 2014 | 10908 | 11100 | 8752 | 6916 | 1303 | 340 | 96 | 39 | 15 |
| 2015 | 9651 | 8930 | 9062 | 6573 | 3947 | 587 | 155 | 34 | 14 |
| 2016 | 9887 | 7901 | 7294 | 6811 | 3744 | 1742 | 245 | 59 | 14 |
| 2017 | 6758 | 8097 | 6452 | 5463 | 3695 | 1653 | 650 | 97 | 28 |
| 2018 | 9916 | 5533 | 6615 | 4826 | 2982 | 1505 | 568 | 211 | 40 |
| 2019 | 12753 | 8119 | 4520 | 4942 | 2571 | 1196 | 461 | 157 | 63 |
| 2020 | 8040 | 10444 | 6632 | 3391 | 2778 | 957 | 390 | 128 | 62 |
| 2021 | 15284 | 6580 | 8533 | 4999 | 2003 | 1240 | 333 | 134 | 60 |
| 2022 | 9952 | 12517 | 5374 | 6452 | 3034 | 1050 | 539 | 135 | 73 |
| 2023 | 11216 | 8147 | 10222 | 4000 | 3978 | 1660 | 520 | 243 | 90 |
| 2024 | 12121 | 9183 | 6647 | 7344 | 2447 | 2149 | 809 | 244 | 167 |
| 2025 | 13602 | 9924 | 7491 | 4663 | 4309 | 1324 | 997 | 369 | 172 |