| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 1978 | 29604249 | 8016472 | 1812720 | 802361 | 235276 | 19611 | 13129 | 2940 | 537 |
| 1979 | 21928022 | 8673500 | 2164557 | 610107 | 263190 | 68517 | 5591 | 3319 | 816 |
| 1980 | 10139069 | 6636247 | 2445032 | 758250 | 189330 | 79155 | 17245 | 1465 | 1065 |
| 1981 | 8624782 | 2660582 | 1934461 | 851702 | 239293 | 54322 | 18708 | 4409 | 562 |
| 1982 | 6283069 | 2167883 | 612587 | 701030 | 242506 | 61780 | 12022 | 4026 | 1143 |
| 1983 | 8412226 | 1571799 | 489170 | 215440 | 217747 | 66079 | 13544 | 2625 | 1367 |
| 1984 | 8377825 | 2327853 | 387435 | 172352 | 65026 | 63258 | 15199 | 3208 | 886 |
| 1985 | 15277978 | 2212571 | 647846 | 147978 | 54076 | 17700 | 15988 | 3343 | 971 |
| 1986 | 15586327 | 4639657 | 593246 | 263199 | 50174 | 15834 | 4000 | 3991 | 831 |
| 1987 | 14723768 | 4595469 | 1371063 | 226527 | 94808 | 12895 | 3814 | 888 | 1060 |
| 1988 | 20962434 | 4243904 | 1485299 | 527636 | 81601 | 29911 | 3167 | 956 | 475 |
| 1989 | 12252531 | 6610469 | 1125132 | 625716 | 185656 | 24807 | 8148 | 872 | 589 |
| 1990 | 11571855 | 3417233 | 2035081 | 439003 | 235281 | 61128 | 6056 | 2331 | 501 |
| 1991 | 13185705 | 3170748 | 969817 | 841971 | 143896 | 75258 | 17584 | 1703 | 958 |
| 1992 | 15481607 | 3638827 | 978091 | 362271 | 326145 | 41431 | 19303 | 5963 | 565 |
| 1993 | 15621769 | 4210771 | 982062 | 388901 | 132899 | 107262 | 10944 | 5093 | 2699 |
| 1994 | 14056492 | 4165861 | 1149321 | 356972 | 125022 | 41072 | 29473 | 2878 | 1861 |
| 1995 | 10144277 | 3594638 | 1155871 | 443857 | 121101 | 38496 | 11340 | 9009 | 1435 |
| 1996 | 7352664 | 2309129 | 953412 | 453000 | 165964 | 40684 | 12321 | 3651 | 4234 |
| 1997 | 10776667 | 1609196 | 582874 | 381618 | 161700 | 59528 | 13064 | 4164 | 2847 |
| 1998 | 17596053 | 2344000 | 421148 | 237668 | 148401 | 58394 | 20231 | 4806 | 2409 |
| 1999 | 18633326 | 3761422 | 618856 | 168899 | 100076 | 54643 | 20945 | 6782 | 2828 |
| 2000 | 14234506 | 3647176 | 1061917 | 258909 | 71974 | 37925 | 19087 | 8199 | 3468 |
| 2001 | 12646548 | 2648519 | 1139655 | 448857 | 111743 | 28930 | 15556 | 7400 | 5740 |
| 2002 | 6910423 | 2237111 | 753598 | 572606 | 195601 | 44306 | 10212 | 6081 | 4742 |
| 2003 | 6717656 | 1047792 | 540286 | 352852 | 260848 | 81665 | 16998 | 3815 | 4415 |
| 2004 | 6602547 | 1016972 | 228396 | 232607 | 171793 | 109587 | 35312 | 6995 | 2773 |
| 2005 | 6380238 | 990334 | 244907 | 90334 | 107199 | 79133 | 44786 | 15085 | 4335 |
| 2006 | 4952054 | 969540 | 265637 | 97835 | 41592 | 53203 | 36712 | 18821 | 7918 |
| 2007 | 6681065 | 701897 | 252561 | 120805 | 41874 | 18767 | 25933 | 16460 | 11884 |
| 2008 | 6727299 | 1026459 | 181033 | 111443 | 54048 | 17844 | 8231 | 12560 | 14213 |
| 2009 | 6509135 | 1117562 | 268177 | 73845 | 46069 | 24236 | 7594 | 3671 | 11920 |
| 2010 | 6647243 | 1112655 | 330587 | 110637 | 34163 | 20844 | 10476 | 3119 | 7737 |
| 2011 | 5157000 | 1119969 | 349468 | 152223 | 54843 | 16228 | 9138 | 4459 | 5340 |
| 2012 | 4827407 | 775508 | 355318 | 151610 | 74617 | 25726 | 7132 | 3816 | 5423 |
| 2013 | 8154895 | 662084 | 205375 | 176497 | 73745 | 31304 | 10468 | 2944 | 4450 |
| 2014 | 9610544 | 1240523 | 198581 | 99479 | 87008 | 32757 | 12346 | 4461 | 3818 |
| 2015 | 9399307 | 1388298 | 404213 | 85318 | 49989 | 39956 | 12922 | 5018 | 4391 |
| 2016 | 10803047 | 1372132 | 420848 | 169702 | 40435 | 21785 | 15012 | 5477 | 4228 |
| 2017 | 6429965 | 1722845 | 418657 | 168561 | 68245 | 16611 | 7552 | 5927 | 4560 |
| 2018 | 8651169 | 957763 | 494837 | 170932 | 68964 | 25107 | 5446 | 2926 | 3574 |
| 2019 | 16661449 | 1495675 | 291873 | 206550 | 73385 | 25570 | 7741 | 2068 | 1941 |
| 2020 | 16590217 | 3368616 | 438917 | 141416 | 93523 | 28689 | 9365 | 2837 | 1196 |
| 2021 | 8780115 | 3386403 | 1151637 | 198390 | 72836 | 39263 | 11795 | 4014 | 1043 |
| 2022 | 11089250 | 1568001 | 1161506 | 592412 | 100583 | 33464 | 16742 | 5175 | 2346 |
| 2023 | 8389624 | 2242067 | 533117 | 584810 | 324215 | 46419 | 14878 | 8248 | 3423 |
| 2024 | 13461472 | 1548502 | 662397 | 268511 | 351253 | 174061 | 21508 | 7102 | 6635 |
| 2025 | 13461472 | 2696274 | 475340 | 321990 | 145682 | 186717 | 87467 | 11416 | 7580 |