| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2000 | 310 | 116 | 107 | 92 | 6 | 1 | 0 | 0 | 0 |
| 2001 | 351 | 254 | 93 | 52 | 20 | 2 | 0 | 0 | 0 |
| 2002 | 290 | 287 | 204 | 46 | 12 | 7 | 1 | 0 | 0 |
| 2003 | 578 | 238 | 230 | 101 | 12 | 4 | 3 | 1 | 0 |
| 2004 | 1190 | 474 | 191 | 121 | 29 | 4 | 2 | 2 | 0 |
| 2005 | 2875 | 974 | 380 | 89 | 34 | 9 | 2 | 1 | 0 |
| 2006 | 3547 | 2354 | 780 | 165 | 22 | 11 | 4 | 1 | 0 |
| 2007 | 3017 | 2904 | 1886 | 291 | 37 | 8 | 6 | 2 | 0 |
| 2008 | 1622 | 2470 | 2335 | 702 | 37 | 12 | 4 | 3 | 1 |
| 2009 | 3184 | 1328 | 1992 | 1087 | 107 | 9 | 5 | 2 | 1 |
| 2010 | 2734 | 2607 | 1074 | 1123 | 316 | 26 | 4 | 3 | 1 |
| 2011 | 3507 | 2239 | 2114 | 682 | 431 | 76 | 11 | 2 | 1 |
| 2012 | 4371 | 2872 | 1819 | 1366 | 273 | 109 | 29 | 5 | 1 |
| 2013 | 5979 | 3579 | 2337 | 1202 | 562 | 77 | 41 | 13 | 2 |
| 2014 | 6336 | 4895 | 2918 | 1579 | 577 | 162 | 27 | 17 | 5 |
| 2015 | 6878 | 5188 | 3996 | 2096 | 764 | 203 | 58 | 11 | 8 |
| 2016 | 8492 | 5631 | 4237 | 2929 | 983 | 270 | 73 | 23 | 7 |
| 2017 | 6064 | 6953 | 4601 | 3179 | 1421 | 378 | 106 | 27 | 11 |
| 2018 | 5880 | 4965 | 5683 | 3509 | 1805 | 629 | 131 | 36 | 14 |
| 2019 | 7204 | 4815 | 4059 | 4310 | 1944 | 739 | 171 | 37 | 16 |
| 2020 | 3672 | 5899 | 3937 | 3028 | 2296 | 671 | 201 | 39 | 16 |
| 2021 | 7462 | 3006 | 4823 | 2914 | 1652 | 929 | 202 | 47 | 17 |
| 2022 | 2767 | 6111 | 2458 | 3613 | 1689 | 835 | 374 | 61 | 21 |
| 2023 | 1741 | 2266 | 4996 | 1861 | 2104 | 885 | 359 | 118 | 28 |
| 2024 | 1374 | 1425 | 1853 | 3689 | 1078 | 997 | 362 | 113 | 52 |