| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 1978 | 28646998 | 8451043 | 1793462 | 798136 | 224673 | 19491 | 12246 | 3265 | 492 |
| 1979 | 22080714 | 8693879 | 2204393 | 630226 | 270335 | 69865 | 5364 | 3717 | 1015 |
| 1980 | 13788835 | 6914248 | 2440435 | 763019 | 202258 | 85915 | 18794 | 1735 | 1413 |
| 1981 | 12595012 | 3672124 | 2017962 | 876029 | 233330 | 56052 | 18487 | 4999 | 745 |
| 1982 | 9684059 | 3146235 | 824398 | 780610 | 280401 | 62745 | 11460 | 4427 | 1289 |
| 1983 | 11919016 | 2404532 | 716705 | 315586 | 291557 | 94484 | 15634 | 3453 | 1690 |
| 1984 | 10881610 | 3425623 | 579731 | 266081 | 100946 | 93562 | 24000 | 4786 | 1446 |
| 1985 | 15993343 | 2853677 | 948897 | 209840 | 78006 | 27918 | 21827 | 5979 | 1545 |
| 1986 | 15556503 | 5059847 | 803705 | 382213 | 73869 | 23814 | 5935 | 5705 | 1635 |
| 1987 | 13901836 | 4701815 | 1505952 | 292663 | 127275 | 18893 | 4999 | 1391 | 1587 |
| 1988 | 17035744 | 4031909 | 1484870 | 539339 | 88233 | 32289 | 3275 | 1000 | 517 |
| 1989 | 11044731 | 5567401 | 987964 | 570610 | 167172 | 24325 | 7549 | 862 | 430 |
| 1990 | 10303321 | 3068877 | 1705328 | 371335 | 195993 | 45084 | 5005 | 1738 | 290 |
| 1991 | 11613720 | 2793872 | 796562 | 665239 | 110344 | 56021 | 12761 | 1402 | 579 |
| 1992 | 13389922 | 3239407 | 851598 | 306104 | 261934 | 32802 | 16595 | 4493 | 541 |
| 1993 | 13153542 | 3726344 | 869598 | 343185 | 118723 | 91504 | 9823 | 4889 | 1634 |
| 1994 | 12019583 | 3561136 | 998193 | 322878 | 115295 | 40518 | 28370 | 2960 | 1711 |
| 1995 | 9597003 | 3101552 | 984229 | 384350 | 110168 | 34945 | 11349 | 8605 | 1292 |
| 1996 | 7653365 | 2169871 | 821514 | 390855 | 141474 | 35646 | 11020 | 3606 | 3274 |
| 1997 | 10966946 | 1632792 | 537104 | 344193 | 144242 | 51490 | 11835 | 3733 | 2156 |
| 1998 | 16410466 | 2384318 | 414750 | 225623 | 140558 | 53932 | 19895 | 4680 | 2099 |
| 1999 | 16219548 | 3574994 | 613488 | 171111 | 102737 | 56105 | 21452 | 7475 | 2451 |
| 2000 | 13476069 | 3113371 | 938383 | 244844 | 72948 | 38437 | 21021 | 8642 | 3626 |
| 2001 | 13525337 | 2459851 | 987808 | 381133 | 98902 | 25324 | 14308 | 7481 | 4524 |
| 2002 | 9265684 | 2414243 | 725295 | 525436 | 173688 | 39800 | 9130 | 5837 | 4240 |
| 2003 | 8089939 | 1389643 | 582800 | 370032 | 262823 | 79251 | 16815 | 3829 | 3793 |
| 2004 | 8052890 | 1150515 | 269361 | 256495 | 188590 | 121233 | 39161 | 8159 | 3145 |
| 2005 | 7627948 | 1180590 | 286885 | 110092 | 125702 | 97206 | 56182 | 18815 | 5055 |
| 2006 | 6147772 | 1134472 | 335367 | 121399 | 53886 | 67588 | 49241 | 26436 | 10207 |
| 2007 | 7758315 | 823632 | 311859 | 150270 | 53555 | 25449 | 33316 | 23403 | 16228 |
| 2008 | 7322000 | 1197224 | 218694 | 141030 | 68059 | 23816 | 11896 | 16318 | 19609 |
| 2009 | 6673163 | 1218885 | 321108 | 91082 | 60013 | 33576 | 11402 | 5846 | 16099 |
| 2010 | 6986471 | 1134412 | 373735 | 129674 | 43016 | 28684 | 14515 | 5018 | 9165 |
| 2011 | 5721955 | 1191288 | 373542 | 170077 | 61308 | 19398 | 10898 | 5866 | 5734 |
| 2012 | 5282782 | 821787 | 382845 | 163540 | 81711 | 28818 | 8191 | 4655 | 5537 |
| 2013 | 7685252 | 661493 | 216927 | 185079 | 80941 | 34623 | 11696 | 3370 | 4487 |
| 2014 | 9008359 | 1108796 | 200681 | 104127 | 92629 | 36535 | 13561 | 5160 | 3700 |
| 2015 | 8911070 | 1261442 | 382656 | 85080 | 50825 | 41583 | 13532 | 5474 | 3856 |
| 2016 | 10282912 | 1225192 | 390953 | 155958 | 38623 | 20910 | 14723 | 5476 | 3816 |
| 2017 | 7257290 | 1600243 | 377765 | 154855 | 60616 | 15849 | 6775 | 5942 | 3805 |
| 2018 | 8999380 | 1006738 | 461297 | 161043 | 64106 | 23338 | 5291 | 2773 | 3550 |
| 2019 | 15039941 | 1494148 | 299874 | 201917 | 73581 | 25317 | 7758 | 2304 | 2264 |
| 2020 | 14788218 | 3158277 | 429918 | 141057 | 93014 | 28028 | 8688 | 2802 | 1391 |
| 2021 | 8840420 | 3113023 | 1110584 | 192115 | 72122 | 38098 | 11520 | 3884 | 1429 |
| 2022 | 10606768 | 1507640 | 1116419 | 564654 | 96806 | 33985 | 16798 | 5448 | 2365 |
| 2023 | 8920089 | 2163169 | 543220 | 587270 | 321841 | 48527 | 15535 | 9161 | 3813 |
| 2024 | 12523147 | 1618901 | 683977 | 281232 | 373043 | 185795 | 23545 | 7895 | 6386 |
| 2025 | 12523147 | 2531146 | 509237 | 344033 | 159414 | 213800 | 101795 | 13934 | 8531 |