| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1242 | 438 | 195 | 155 | 7 | 1 | 0 | 0 | 0 |
| 2001 | 1524 | 1017 | 358 | 103 | 27 | 2 | 0 | 0 | 0 |
| 2002 | 1675 | 1247 | 820 | 187 | 17 | 9 | 1 | 0 | 0 |
| 2003 | 1353 | 1371 | 952 | 421 | 28 | 5 | 4 | 1 | 0 |
| 2004 | 1554 | 1107 | 1080 | 494 | 52 | 8 | 2 | 2 | 0 |
| 2005 | 3780 | 1272 | 784 | 557 | 64 | 14 | 3 | 1 | 0 |
| 2006 | 3008 | 3095 | 820 | 415 | 83 | 18 | 6 | 2 | 0 |
| 2007 | 3043 | 2463 | 1851 | 450 | 87 | 26 | 9 | 4 | 1 |
| 2008 | 2674 | 2491 | 1659 | 1064 | 116 | 28 | 12 | 5 | 2 |
| 2009 | 3450 | 2189 | 1933 | 1003 | 299 | 37 | 13 | 6 | 4 |
| 2010 | 4291 | 2825 | 1740 | 1245 | 336 | 98 | 18 | 7 | 7 |
| 2011 | 16394 | 3512 | 2302 | 1176 | 490 | 113 | 46 | 9 | 6 |
| 2012 | 15714 | 13423 | 2865 | 1612 | 521 | 178 | 53 | 23 | 8 |
| 2013 | 13511 | 12866 | 10860 | 2081 | 853 | 209 | 86 | 28 | 15 |
| 2014 | 11065 | 11062 | 10493 | 8030 | 1190 | 382 | 95 | 41 | 19 |
| 2015 | 8210 | 9060 | 9047 | 7912 | 4697 | 544 | 173 | 37 | 11 |
| 2016 | 9737 | 6721 | 7411 | 6814 | 4600 | 2071 | 223 | 68 | 14 |
| 2017 | 8113 | 7973 | 5491 | 5555 | 3790 | 2031 | 753 | 88 | 44 |
| 2018 | 11061 | 6641 | 6516 | 4104 | 3063 | 1605 | 686 | 245 | 44 |
| 2019 | 14098 | 9057 | 5431 | 4871 | 2219 | 1279 | 508 | 189 | 47 |
| 2020 | 9141 | 11545 | 7398 | 4091 | 2704 | 882 | 455 | 147 | 61 |
| 2021 | 16990 | 7483 | 9425 | 5607 | 2381 | 1196 | 345 | 165 | 60 |
| 2022 | 12020 | 13913 | 6125 | 7162 | 3423 | 1203 | 546 | 149 | 100 |
| 2023 | 12458 | 9841 | 11360 | 4600 | 4463 | 1864 | 594 | 255 | 128 |
| 2024 | 8111 | 10201 | 7963 | 8269 | 2884 | 2461 | 915 | 278 | 250 |
| 2025 | 7626 | 6641 | 8253 | 5706 | 4998 | 1619 | 1197 | 415 | 226 |