| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1789 | 804 | 169 | 85 | 5 | 1 | 0 | 0 | 0 |
| 2001 | 1392 | 1464 | 657 | 92 | 21 | 2 | 0 | 0 | 0 |
| 2002 | 2199 | 1139 | 1183 | 337 | 21 | 7 | 1 | 0 | 0 |
| 2003 | 1908 | 1800 | 876 | 557 | 62 | 7 | 3 | 0 | 0 |
| 2004 | 2095 | 1562 | 1390 | 438 | 69 | 19 | 3 | 1 | 0 |
| 2005 | 3729 | 1715 | 1095 | 564 | 42 | 21 | 8 | 1 | 0 |
| 2006 | 3574 | 3053 | 1094 | 364 | 60 | 13 | 9 | 4 | 0 |
| 2007 | 2918 | 2927 | 2060 | 331 | 56 | 20 | 6 | 4 | 1 |
| 2008 | 2682 | 2389 | 2051 | 880 | 64 | 18 | 8 | 3 | 1 |
| 2009 | 2671 | 2196 | 1827 | 1001 | 238 | 21 | 8 | 4 | 1 |
| 2010 | 4431 | 2187 | 1741 | 1112 | 345 | 80 | 9 | 3 | 1 |
| 2011 | 8780 | 3628 | 1775 | 1172 | 462 | 115 | 33 | 4 | 1 |
| 2012 | 10435 | 7189 | 2951 | 1208 | 508 | 158 | 46 | 14 | 1 |
| 2013 | 11130 | 8545 | 5836 | 2107 | 606 | 180 | 62 | 19 | 4 |
| 2014 | 7673 | 9113 | 6965 | 4232 | 1169 | 220 | 69 | 25 | 6 |
| 2015 | 7150 | 6282 | 7449 | 5191 | 2288 | 428 | 81 | 27 | 9 |
| 2016 | 8453 | 5853 | 5136 | 5502 | 2753 | 820 | 151 | 31 | 10 |
| 2017 | 4447 | 6921 | 4787 | 3691 | 2394 | 964 | 271 | 55 | 11 |
| 2018 | 8139 | 3641 | 5659 | 3383 | 1385 | 797 | 306 | 93 | 18 |
| 2019 | 6349 | 6664 | 2977 | 3998 | 1287 | 450 | 250 | 101 | 30 |
| 2020 | 5968 | 5198 | 5445 | 2127 | 1737 | 423 | 145 | 83 | 35 |
| 2021 | 14962 | 4886 | 4247 | 3963 | 955 | 595 | 141 | 50 | 32 |
| 2022 | 5630 | 12253 | 3996 | 3045 | 1870 | 340 | 208 | 49 | 22 |
| 2023 | 8044 | 4609 | 9995 | 2734 | 1383 | 689 | 127 | 75 | 19 |
| 2024 | 7242 | 6587 | 3730 | 6304 | 1289 | 512 | 258 | 46 | 25 |
| 2025 | 7292 | 5929 | 5334 | 2167 | 2697 | 485 | 188 | 93 | 19 |