| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1960 | 89968 | 119779 | 58509 | 27912 | 29599 | 18603 | 11712 | 7693 | 4165 | 12360 |
| 1961 | 109171 | 59498 | 79958 | 31749 | 16909 | 16812 | 10472 | 7754 | 5553 | 12329 |
| 1962 | 204940 | 64244 | 38789 | 53231 | 20035 | 13096 | 12011 | 7159 | 5872 | 14099 |
| 1963 | 274586 | 131956 | 35703 | 28674 | 32239 | 12658 | 10848 | 8690 | 5320 | 15328 |
| 1964 | 91020 | 191749 | 77466 | 19944 | 20244 | 21190 | 8757 | 8552 | 6673 | 16737 |
| 1965 | 266231 | 56686 | 112663 | 47733 | 14428 | 12875 | 14514 | 5363 | 5975 | 16377 |
| 1966 | 133959 | 192391 | 36885 | 62042 | 27574 | 9736 | 7940 | 7944 | 3475 | 15205 |
| 1967 | 186454 | 82049 | 121041 | 20257 | 34034 | 16885 | 7163 | 5811 | 5036 | 12215 |
| 1968 | 144142 | 127060 | 46267 | 69050 | 12951 | 22766 | 10586 | 4874 | 3720 | 9441 |
| 1969 | 258773 | 89735 | 89822 | 31974 | 45681 | 11493 | 18137 | 7355 | 3334 | 7363 |
| 1970 | 225030 | 163553 | 56966 | 62520 | 22296 | 34888 | 10636 | 15878 | 5355 | 7931 |
| 1971 | 242841 | 148063 | 81169 | 33999 | 34315 | 13264 | 18309 | 7585 | 10357 | 8379 |
| 1972 | 150267 | 149695 | 90780 | 42471 | 23213 | 18551 | 9642 | 10642 | 4961 | 10599 |
| 1973 | 205425 | 78769 | 88290 | 56228 | 26334 | 15844 | 12183 | 7664 | 6573 | 9517 |
| 1974 | 104157 | 114248 | 39545 | 56883 | 37129 | 16393 | 11035 | 8387 | 4801 | 9039 |
| 1975 | 172392 | 45394 | 52306 | 17197 | 25294 | 20658 | 9469 | 6770 | 4996 | 7274 |
| 1976 | 225968 | 77072 | 19212 | 26338 | 9889 | 11076 | 8936 | 4960 | 3307 | 5710 |
| 1977 | 210553 | 89961 | 31188 | 8165 | 13888 | 5298 | 5810 | 4231 | 2459 | 4095 |
| 1978 | 137124 | 93059 | 37111 | 15519 | 4597 | 7301 | 3132 | 3230 | 2395 | 4070 |
| 1979 | 205006 | 60452 | 39617 | 16129 | 8303 | 2337 | 4192 | 1666 | 1608 | 3417 |
| 1980 | 119319 | 101493 | 23415 | 17028 | 8642 | 3781 | 1039 | 2110 | 858 | 2632 |
| 1981 | 257375 | 57686 | 47413 | 9870 | 8179 | 4600 | 1780 | 581 | 1078 | 1734 |
| 1982 | 127915 | 144599 | 24096 | 21033 | 4560 | 4291 | 2125 | 970 | 316 | 1532 |
| 1983 | 100893 | 68210 | 65787 | 9028 | 9417 | 2628 | 2412 | 1119 | 545 | 1097 |
| 1984 | 93866 | 57486 | 29750 | 25171 | 3831 | 4627 | 1303 | 1274 | 594 | 881 |
| 1985 | 93862 | 43942 | 23222 | 12510 | 8862 | 1810 | 2127 | 557 | 579 | 682 |
| 1986 | 186023 | 46614 | 18457 | 11469 | 5785 | 3329 | 865 | 964 | 253 | 552 |
| 1987 | 158355 | 139599 | 20903 | 8602 | 6090 | 2499 | 1311 | 413 | 425 | 363 |
| 1988 | 84801 | 114007 | 84079 | 10804 | 3923 | 2433 | 1287 | 480 | 184 | 317 |
| 1989 | 77458 | 56246 | 64255 | 43407 | 4863 | 1351 | 916 | 564 | 161 | 220 |
| 1990 | 77665 | 47366 | 28888 | 26994 | 18323 | 2435 | 644 | 459 | 292 | 196 |
| 1991 | 227402 | 44963 | 22711 | 14938 | 12060 | 7837 | 1253 | 322 | 239 | 254 |
| 1992 | 304957 | 151767 | 21681 | 11751 | 8664 | 6474 | 4116 | 677 | 174 | 274 |
| 1993 | 219939 | 235834 | 86176 | 9909 | 4566 | 3466 | 2582 | 2045 | 306 | 205 |
| 1994 | 151397 | 170838 | 151689 | 43202 | 4536 | 1886 | 1561 | 1050 | 1046 | 248 |
| 1995 | 289455 | 125809 | 118794 | 90576 | 15452 | 1940 | 867 | 796 | 471 | 666 |
| 1996 | 151402 | 254280 | 83743 | 65361 | 51230 | 8467 | 1084 | 505 | 451 | 661 |
| 1997 | 167172 | 114205 | 185693 | 55373 | 44754 | 27357 | 4304 | 560 | 279 | 618 |
| 1998 | 109296 | 137476 | 76349 | 135350 | 32437 | 25628 | 14588 | 2729 | 343 | 560 |
| 1999 | 252423 | 81779 | 97778 | 47601 | 78644 | 17801 | 16664 | 9469 | 1692 | 568 |
| 2000 | 139902 | 207589 | 54434 | 53929 | 29098 | 42115 | 12452 | 11793 | 5481 | 1367 |
| 2001 | 206132 | 100334 | 156340 | 39674 | 34313 | 17643 | 25101 | 8602 | 7453 | 3991 |
| 2002 | 283088 | 168579 | 73562 | 108327 | 27248 | 21577 | 12499 | 16305 | 5337 | 7242 |
| 2003 | 173152 | 248995 | 105568 | 44233 | 53551 | 21269 | 14911 | 9608 | 10150 | 7885 |
| 2004 | 173355 | 152163 | 167876 | 66209 | 33380 | 35483 | 12602 | 9466 | 6282 | 10649 |
| 2005 | 326594 | 126939 | 80373 | 106074 | 48917 | 22911 | 27259 | 8509 | 4504 | 8024 |
| 2006 | 90338 | 267359 | 79850 | 43303 | 65593 | 28740 | 17385 | 15607 | 4714 | 6702 |
| 2007 | 101579 | 64808 | 180840 | 52306 | 28317 | 35088 | 21569 | 10680 | 7226 | 4443 |
| 2008 | 192626 | 67791 | 40687 | 90590 | 30118 | 15815 | 20652 | 12398 | 4996 | 5225 |
| 2009 | 131725 | 153084 | 39875 | 25773 | 54256 | 14441 | 8062 | 10463 | 6141 | 4543 |
| 2010 | 262977 | 86055 | 91062 | 27413 | 13217 | 33985 | 7744 | 3880 | 4390 | 4680 |
| 2011 | 130038 | 203664 | 43582 | 47175 | 17121 | 8007 | 16233 | 4146 | 1922 | 4011 |
| 2012 | 129204 | 102660 | 119045 | 31176 | 23410 | 9708 | 4383 | 7637 | 1974 | 2862 |
| 2013 | 224075 | 73803 | 68277 | 80245 | 18866 | 12174 | 4925 | 2405 | 3753 | 2479 |
| 2014 | 107820 | 180567 | 50264 | 41703 | 46098 | 11516 | 7112 | 3103 | 1404 | 3528 |
| 2015 | 147039 | 77603 | 122664 | 38019 | 27589 | 27080 | 6557 | 3851 | 1914 | 3066 |
| 2016 | 229349 | 103056 | 51550 | 66348 | 24342 | 16905 | 15157 | 3765 | 2495 | 3589 |
| 2017 | 188274 | 180652 | 74545 | 30825 | 35834 | 14664 | 9786 | 7751 | 2071 | 4235 |
| 2018 | 145948 | 152256 | 167537 | 52813 | 20359 | 19390 | 9046 | 5905 | 4324 | 4016 |
| 2019 | 227796 | 128236 | 100948 | 113233 | 31702 | 12023 | 10420 | 4965 | 3107 | 4694 |
| 2020 | 129509 | 202374 | 91914 | 68034 | 68189 | 18367 | 7322 | 5785 | 2808 | 4821 |
| 2021 | 157888 | 101727 | 173279 | 60439 | 40219 | 38258 | 10376 | 4353 | 3359 | 5029 |
| 2022 | 137947 | 124925 | 85886 | 121461 | 40869 | 21827 | 17810 | 4851 | 2203 | 4893 |
| 2023 | 71461 | 105940 | 96490 | 54489 | 60189 | 22819 | 13448 | 8971 | 2545 | 3825 |
| 2024 | 174664 | 52401 | 71440 | 56690 | 28504 | 27542 | 10919 | 6274 | 4448 | 3131 |
| 2025 | 191834 | 146892 | 35785 | 38769 | 26141 | 13035 | 11618 | 5170 | 2876 | 3727 |
| pred | 146275 | 96930 | 21131 | 20399 | 13439 | 6831 | 6089 | 2709 | 3460 | |