| Table 3. Estimated stock numbers at age. | |||||||
| Year Age | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 2002 | 372340 | 71770 | 45581 | 20097 | 4547 | 563 | 601 |
| 2003 | 277183 | 97437 | 27501 | 15365 | 6329 | 1681 | 429 |
| 2004 | 388100 | 70545 | 35074 | 11310 | 5547 | 2683 | 952 |
| 2005 | 291527 | 109498 | 31393 | 13364 | 4680 | 2393 | 1834 |
| 2006 | 262270 | 76130 | 46793 | 16378 | 5612 | 2354 | 2259 |
| 2007 | 295536 | 72341 | 31363 | 18963 | 6748 | 2409 | 2139 |
| 2008 | 268848 | 82354 | 31340 | 12842 | 7055 | 2803 | 2349 |
| 2009 | 336399 | 73370 | 33718 | 13237 | 5003 | 2846 | 2466 |
| 2010 | 515871 | 95627 | 30493 | 13710 | 5307 | 2351 | 2763 |
| 2011 | 578855 | 139012 | 41827 | 12694 | 5560 | 2640 | 3117 |
| 2012 | 447068 | 156495 | 55539 | 17935 | 5454 | 2538 | 3129 |
| 2013 | 534857 | 117743 | 65898 | 25960 | 9050 | 3032 | 3495 |
| 2014 | 552451 | 152559 | 50998 | 31037 | 13310 | 5332 | 4056 |
| 2015 | 538480 | 159046 | 65708 | 26557 | 16262 | 7485 | 6048 |
| 2016 | 678878 | 151722 | 74624 | 33580 | 14129 | 8614 | 8168 |
| 2017 | 970543 | 190105 | 65028 | 36991 | 17679 | 7576 | 9189 |
| 2018 | 751775 | 269066 | 85141 | 30964 | 19954 | 9787 | 9775 |
| 2019 | 762370 | 198516 | 113712 | 42883 | 14177 | 11124 | 10908 |
| 2020 | 2320525 | 208780 | 86442 | 55042 | 21323 | 7415 | 11968 |
| 2021 | 3201330 | 604871 | 105346 | 42934 | 27907 | 11721 | 11956 |
| 2022 | 4764905 | 824504 | 262917 | 62492 | 23423 | 15262 | 14562 |
| 2023 | 7014864 | 1214693 | 370385 | 144640 | 37677 | 14186 | 18944 |
| 2024 | 9353570 | 1849670 | 514581 | 204034 | 85840 | 24312 | 22044 |