| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1166 | 435 | 191 | 157 | 8 | 1 | 0 | 0 | 0 |
| 2001 | 1458 | 954 | 356 | 102 | 25 | 3 | 0 | 0 | 0 |
| 2002 | 1652 | 1193 | 770 | 189 | 15 | 8 | 1 | 0 | 0 |
| 2003 | 1391 | 1353 | 896 | 404 | 26 | 4 | 4 | 1 | 0 |
| 2004 | 1663 | 1139 | 1071 | 476 | 47 | 7 | 2 | 2 | 0 |
| 2005 | 3906 | 1361 | 803 | 570 | 57 | 13 | 3 | 1 | 0 |
| 2006 | 3225 | 3198 | 885 | 437 | 81 | 16 | 6 | 2 | 0 |
| 2007 | 3204 | 2640 | 1856 | 498 | 88 | 25 | 8 | 3 | 1 |
| 2008 | 2843 | 2623 | 1781 | 1086 | 120 | 28 | 11 | 4 | 1 |
| 2009 | 3474 | 2328 | 2046 | 1092 | 290 | 39 | 13 | 6 | 3 |
| 2010 | 4380 | 2844 | 1849 | 1324 | 354 | 96 | 19 | 7 | 5 |
| 2011 | 15438 | 3586 | 2319 | 1249 | 503 | 124 | 46 | 9 | 6 |
| 2012 | 15949 | 12640 | 2925 | 1620 | 539 | 185 | 60 | 17 | 8 |
| 2013 | 13950 | 13058 | 10213 | 2129 | 850 | 223 | 92 | 38 | 11 |
| 2014 | 11201 | 11422 | 10651 | 7562 | 1228 | 384 | 105 | 48 | 20 |
| 2015 | 8142 | 9172 | 9342 | 8067 | 4465 | 567 | 178 | 25 | 12 |
| 2016 | 9767 | 6665 | 7502 | 7056 | 4738 | 1982 | 234 | 70 | 10 |
| 2017 | 7866 | 7998 | 5445 | 5627 | 3913 | 2128 | 738 | 111 | 40 |
| 2018 | 11060 | 6439 | 6537 | 4068 | 3082 | 1666 | 744 | 223 | 50 |
| 2019 | 13867 | 9056 | 5265 | 4882 | 2182 | 1276 | 541 | 158 | 50 |
| 2020 | 9521 | 11357 | 7397 | 3968 | 2702 | 855 | 459 | 118 | 58 |
| 2021 | 18592 | 7794 | 9268 | 5621 | 2316 | 1203 | 342 | 171 | 52 |
| 2022 | 13187 | 15225 | 6380 | 7073 | 3471 | 1193 | 570 | 174 | 98 |
| 2023 | 12774 | 10796 | 12434 | 4817 | 4456 | 1932 | 614 | 309 | 144 |
| 2024 | 8321 | 10460 | 8743 | 9086 | 3060 | 2491 | 976 | 315 | 303 |
| 2025 | 7792 | 6813 | 8460 | 6287 | 5595 | 1746 | 1236 | 455 | 293 |