| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 1993 | 137649 | 47950 | 12840 | 4307 | 1282 | 390 | 312 | 194 | 87 |
| 1994 | 416170 | 45325 | 16527 | 3305 | 1488 | 439 | 140 | 118 | 97 |
| 1995 | 443522 | 142700 | 15036 | 4584 | 1201 | 589 | 175 | 58 | 84 |
| 1996 | 162826 | 152145 | 49553 | 4196 | 1692 | 478 | 249 | 74 | 57 |
| 1997 | 58367 | 54769 | 57833 | 13421 | 1548 | 685 | 209 | 114 | 58 |
| 1998 | 87493 | 19102 | 18255 | 16985 | 3966 | 518 | 250 | 78 | 60 |
| 1999 | 354707 | 28870 | 6599 | 5051 | 5912 | 1188 | 171 | 85 | 42 |
| 2000 | 356457 | 122435 | 10822 | 1949 | 1879 | 2178 | 432 | 65 | 46 |
| 2001 | 450124 | 119332 | 41898 | 2739 | 605 | 616 | 675 | 131 | 35 |
| 2002 | 963230 | 149842 | 39834 | 10602 | 790 | 168 | 188 | 187 | 45 |
| 2003 | 230371 | 337508 | 56000 | 9175 | 3489 | 187 | 54 | 53 | 61 |
| 2004 | 330321 | 78904 | 116612 | 15200 | 2862 | 1038 | 41 | 12 | 22 |
| 2005 | 239229 | 107704 | 29875 | 29710 | 4577 | 743 | 206 | 4 | 5 |
| 2006 | 214367 | 83539 | 34165 | 7036 | 9178 | 1388 | 212 | 52 | 2 |
| 2007 | 729448 | 72605 | 32642 | 10918 | 2912 | 3821 | 549 | 92 | 17 |
| 2008 | 521365 | 230769 | 27614 | 10362 | 4236 | 1268 | 1595 | 234 | 51 |
| 2009 | 2796347 | 157193 | 83599 | 8064 | 3831 | 1680 | 575 | 650 | 102 |
| 2010 | 169454 | 929776 | 60619 | 26272 | 2954 | 1453 | 682 | 241 | 283 |
| 2011 | 75971 | 58763 | 350929 | 18461 | 9696 | 1272 | 560 | 262 | 197 |
| 2012 | 66606 | 25370 | 26433 | 118312 | 6753 | 3709 | 508 | 199 | 149 |
| 2013 | 663672 | 22406 | 10330 | 11027 | 42297 | 2510 | 1285 | 173 | 95 |
| 2014 | 166963 | 221321 | 9275 | 3644 | 5428 | 15861 | 1000 | 461 | 79 |
| 2015 | 507997 | 59886 | 92842 | 3426 | 1480 | 2724 | 6087 | 402 | 167 |
| 2016 | 104983 | 178184 | 28181 | 36180 | 1313 | 648 | 1257 | 2301 | 180 |
| 2017 | 141587 | 33548 | 69491 | 12053 | 13917 | 510 | 272 | 498 | 749 |
| 2018 | 864273 | 45157 | 14842 | 25337 | 5279 | 5197 | 183 | 109 | 388 |
| 2019 | 302591 | 284978 | 17624 | 5889 | 9811 | 2183 | 1881 | 72 | 164 |
| 2020 | 196509 | 94681 | 117364 | 6284 | 2357 | 3610 | 862 | 636 | 69 |
| 2021 | 215391 | 62712 | 42283 | 50700 | 2302 | 910 | 1281 | 339 | 223 |
| 2022 | 18406 | 75672 | 24593 | 19003 | 22016 | 850 | 297 | 360 | 130 |
| 2023 | 13757 | 6874 | 37963 | 9681 | 8504 | 8116 | 265 | 83 | 103 |
| 2024 | 46137 | 4821 | 3486 | 16414 | 3652 | 3079 | 2136 | 73 | 39 |
| 2025 | 51583 | 16112 | 2052 | 1315 | 6205 | 1194 | 809 | 454 | 19 |