| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1338 | 543 | 195 | 116 | 5 | 0 | 0 | 0 | 0 |
| 2001 | 1454 | 1096 | 444 | 102 | 20 | 1 | 0 | 0 | 0 |
| 2002 | 1728 | 1190 | 886 | 226 | 18 | 6 | 1 | 0 | 0 |
| 2003 | 1597 | 1415 | 908 | 434 | 37 | 5 | 2 | 0 | 0 |
| 2004 | 2086 | 1307 | 1116 | 453 | 58 | 9 | 1 | 1 | 0 |
| 2005 | 4936 | 1708 | 944 | 527 | 69 | 13 | 3 | 1 | 0 |
| 2006 | 3208 | 4041 | 1156 | 433 | 98 | 16 | 5 | 1 | 0 |
| 2007 | 3125 | 2626 | 2632 | 540 | 103 | 25 | 7 | 2 | 1 |
| 2008 | 2733 | 2559 | 1782 | 1337 | 149 | 27 | 10 | 3 | 1 |
| 2009 | 3315 | 2237 | 1988 | 970 | 401 | 39 | 11 | 4 | 1 |
| 2010 | 4025 | 2714 | 1780 | 1226 | 324 | 114 | 16 | 5 | 2 |
| 2011 | 15071 | 3294 | 2212 | 1188 | 501 | 88 | 48 | 7 | 2 |
| 2012 | 15001 | 12340 | 2686 | 1524 | 537 | 165 | 35 | 20 | 3 |
| 2013 | 14392 | 12282 | 9974 | 1955 | 838 | 218 | 73 | 15 | 9 |
| 2014 | 11200 | 11784 | 10016 | 7390 | 1149 | 374 | 98 | 30 | 9 |
| 2015 | 8118 | 9170 | 9639 | 7655 | 4545 | 522 | 168 | 40 | 14 |
| 2016 | 9426 | 6646 | 7501 | 7315 | 4514 | 2059 | 206 | 68 | 20 |
| 2017 | 7223 | 7718 | 5429 | 5613 | 3918 | 2074 | 783 | 83 | 32 |
| 2018 | 10240 | 5913 | 6308 | 4037 | 2976 | 1707 | 755 | 312 | 42 |
| 2019 | 13119 | 8385 | 4834 | 4663 | 2082 | 1243 | 580 | 299 | 129 |
| 2020 | 8699 | 10744 | 6847 | 3626 | 2464 | 792 | 446 | 230 | 156 |
| 2021 | 18651 | 7121 | 8769 | 5201 | 2081 | 1037 | 296 | 178 | 142 |
| 2022 | 12836 | 15273 | 5829 | 6726 | 3191 | 1038 | 448 | 120 | 118 |
| 2023 | 11812 | 10509 | 12475 | 4411 | 4209 | 1737 | 499 | 182 | 88 |
| 2024 | 7674 | 9672 | 8510 | 8947 | 2768 | 2317 | 830 | 203 | 100 |
| 2025 | 6899 | 6283 | 7818 | 5949 | 5340 | 1563 | 1097 | 337 | 112 |