| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 1011 | 417 | 168 | 127 | 6 | 1 | 0 | 0 | 0 |
| 2001 | 1179 | 828 | 335 | 89 | 26 | 3 | 1 | 0 | 0 |
| 2002 | 1314 | 966 | 658 | 174 | 17 | 10 | 2 | 0 | 0 |
| 2003 | 1245 | 1076 | 756 | 321 | 35 | 5 | 5 | 1 | 0 |
| 2004 | 1814 | 1019 | 835 | 380 | 55 | 9 | 2 | 3 | 0 |
| 2005 | 7314 | 1485 | 778 | 360 | 57 | 16 | 3 | 1 | 0 |
| 2006 | 4528 | 5988 | 1123 | 326 | 56 | 18 | 7 | 2 | 0 |
| 2007 | 4426 | 3707 | 4564 | 469 | 78 | 21 | 10 | 5 | 0 |
| 2008 | 2607 | 3624 | 2877 | 2288 | 90 | 27 | 9 | 5 | 2 |
| 2009 | 3616 | 2134 | 2871 | 1614 | 326 | 23 | 12 | 5 | 3 |
| 2010 | 3938 | 2961 | 1712 | 1858 | 436 | 91 | 12 | 7 | 5 |
| 2011 | 15159 | 3224 | 2397 | 1199 | 704 | 99 | 45 | 6 | 5 |
| 2012 | 14743 | 12413 | 2620 | 1697 | 562 | 180 | 49 | 22 | 5 |
| 2013 | 14403 | 12071 | 10101 | 1917 | 885 | 208 | 89 | 26 | 11 |
| 2014 | 11126 | 11792 | 9843 | 7489 | 1130 | 310 | 100 | 44 | 13 |
| 2015 | 11100 | 9109 | 9629 | 7450 | 4393 | 490 | 132 | 43 | 15 |
| 2016 | 11323 | 9088 | 7442 | 7293 | 4417 | 1702 | 193 | 56 | 17 |
| 2017 | 7579 | 9271 | 7425 | 5612 | 4148 | 1941 | 523 | 80 | 29 |
| 2018 | 12820 | 6205 | 7577 | 5599 | 3139 | 1745 | 649 | 167 | 36 |
| 2019 | 12315 | 10498 | 5071 | 5710 | 2983 | 1264 | 550 | 170 | 52 |
| 2020 | 9603 | 10084 | 8579 | 3838 | 3197 | 966 | 455 | 149 | 63 |
| 2021 | 17292 | 7862 | 8238 | 6534 | 2265 | 1355 | 331 | 160 | 67 |
| 2022 | 10429 | 14159 | 6425 | 6260 | 4083 | 1155 | 610 | 130 | 89 |
| 2023 | 10173 | 8538 | 11561 | 4829 | 3936 | 2241 | 592 | 261 | 99 |
| 2024 | 6234 | 8330 | 6962 | 8365 | 3091 | 2170 | 1102 | 260 | 187 |
| 2025 | 4376 | 5104 | 6790 | 4894 | 5066 | 1820 | 966 | 444 | 197 |