| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1334 | 540 | 196 | 116 | 5 | 0 | 0 | 0 | 0 |
| 2001 | 1470 | 1092 | 441 | 102 | 20 | 2 | 0 | 0 | 0 |
| 2002 | 1734 | 1204 | 882 | 226 | 18 | 6 | 1 | 0 | 0 |
| 2003 | 1598 | 1419 | 917 | 434 | 37 | 5 | 2 | 0 | 0 |
| 2004 | 2082 | 1309 | 1121 | 459 | 59 | 9 | 2 | 1 | 0 |
| 2005 | 4951 | 1704 | 944 | 534 | 71 | 14 | 3 | 1 | 0 |
| 2006 | 3235 | 4054 | 1152 | 440 | 100 | 17 | 5 | 2 | 0 |
| 2007 | 3145 | 2648 | 2633 | 546 | 104 | 26 | 7 | 3 | 1 |
| 2008 | 2731 | 2575 | 1797 | 1354 | 148 | 27 | 11 | 4 | 1 |
| 2009 | 3288 | 2235 | 2001 | 989 | 405 | 39 | 11 | 5 | 2 |
| 2010 | 4027 | 2692 | 1778 | 1237 | 332 | 116 | 17 | 6 | 3 |
| 2011 | 14881 | 3297 | 2194 | 1184 | 504 | 93 | 50 | 8 | 4 |
| 2012 | 14903 | 12185 | 2688 | 1509 | 533 | 167 | 38 | 23 | 5 |
| 2013 | 14336 | 12202 | 9846 | 1955 | 826 | 216 | 75 | 18 | 11 |
| 2014 | 11208 | 11739 | 9950 | 7288 | 1147 | 367 | 97 | 32 | 11 |
| 2015 | 8145 | 9177 | 9602 | 7600 | 4465 | 519 | 163 | 35 | 14 |
| 2016 | 9530 | 6668 | 7507 | 7284 | 4468 | 2003 | 202 | 60 | 16 |
| 2017 | 7285 | 7803 | 5447 | 5618 | 3889 | 2029 | 742 | 75 | 27 |
| 2018 | 10355 | 5963 | 6378 | 4052 | 2975 | 1672 | 714 | 249 | 33 |
| 2019 | 13239 | 8479 | 4876 | 4719 | 2096 | 1233 | 548 | 211 | 84 |
| 2020 | 8810 | 10842 | 6924 | 3661 | 2509 | 800 | 435 | 172 | 92 |
| 2021 | 19017 | 7212 | 8849 | 5264 | 2111 | 1069 | 301 | 159 | 89 |
| 2022 | 13085 | 15573 | 5904 | 6792 | 3242 | 1064 | 471 | 127 | 92 |
| 2023 | 11931 | 10712 | 12720 | 4472 | 4264 | 1779 | 522 | 209 | 87 |
| 2024 | 7770 | 9769 | 8677 | 9146 | 2816 | 2362 | 864 | 233 | 126 |
| 2025 | 6994 | 6361 | 7897 | 6085 | 5498 | 1598 | 1134 | 374 | 142 |