| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1959 | 17295 | 12424 | 12073 | 2419 | 4302 | 628 | 524 | 162 | 27 | 0 |
| 1960 | 15885 | 14249 | 8751 | 6008 | 1200 | 1902 | 347 | 233 | 98 | 14 |
| 1961 | 23645 | 12548 | 7315 | 3693 | 2563 | 528 | 711 | 141 | 69 | 42 |
| 1962 | 24520 | 19884 | 7272 | 3487 | 1847 | 1146 | 245 | 231 | 54 | 48 |
| 1963 | 20790 | 20377 | 12646 | 3608 | 1726 | 760 | 516 | 133 | 90 | 52 |
| 1964 | 11015 | 17625 | 12690 | 6920 | 1737 | 839 | 345 | 231 | 81 | 75 |
| 1965 | 21117 | 8198 | 13353 | 7779 | 3541 | 837 | 379 | 130 | 123 | 79 |
| 1966 | 25580 | 17887 | 5496 | 8336 | 4044 | 1535 | 357 | 175 | 59 | 96 |
| 1967 | 21433 | 21523 | 13774 | 3655 | 5310 | 2100 | 674 | 113 | 57 | 69 |
| 1968 | 11805 | 18102 | 16439 | 8844 | 2446 | 3119 | 981 | 281 | 33 | 59 |
| 1969 | 9611 | 9389 | 13833 | 10825 | 4577 | 1212 | 1594 | 393 | 158 | 48 |
| 1970 | 12810 | 7586 | 6596 | 8533 | 6054 | 2239 | 558 | 723 | 126 | 87 |
| 1971 | 23205 | 10252 | 5670 | 4045 | 4782 | 3574 | 1163 | 238 | 374 | 109 |
| 1972 | 16664 | 20347 | 8458 | 4074 | 2493 | 2636 | 1654 | 513 | 85 | 226 |
| 1973 | 38452 | 12513 | 16455 | 6408 | 2781 | 1533 | 1079 | 766 | 320 | 190 |
| 1974 | 36530 | 33622 | 9037 | 9803 | 3844 | 1739 | 1062 | 509 | 407 | 290 |
| 1975 | 24779 | 30664 | 25259 | 6739 | 6591 | 2331 | 917 | 514 | 284 | 383 |
| 1976 | 11266 | 20898 | 23502 | 14036 | 3646 | 3601 | 1210 | 524 | 243 | 348 |
| 1977 | 14129 | 8556 | 15206 | 17610 | 7691 | 1679 | 1765 | 450 | 221 | 258 |
| 1978 | 16804 | 11613 | 6871 | 8902 | 9142 | 2914 | 643 | 500 | 148 | 204 |
| 1979 | 26110 | 13488 | 8591 | 5003 | 4610 | 4800 | 1360 | 287 | 211 | 183 |
| 1980 | 17604 | 22742 | 10808 | 5151 | 2741 | 2233 | 2278 | 704 | 114 | 201 |
| 1981 | 27742 | 13533 | 18203 | 6900 | 2799 | 1473 | 1065 | 1168 | 300 | 181 |
| 1982 | 30831 | 23309 | 10121 | 10929 | 4003 | 1416 | 690 | 415 | 538 | 244 |
| 1983 | 52645 | 24451 | 18010 | 6791 | 6050 | 2252 | 766 | 275 | 178 | 373 |
| 1984 | 22733 | 47726 | 18056 | 9096 | 3298 | 2475 | 824 | 215 | 81 | 256 |
| 1985 | 10370 | 18536 | 35379 | 10054 | 3984 | 1432 | 1265 | 411 | 100 | 191 |
| 1986 | 11684 | 7940 | 14298 | 20574 | 4985 | 1689 | 460 | 334 | 101 | 126 |
| 1987 | 11353 | 9672 | 6756 | 7961 | 9067 | 2075 | 602 | 159 | 141 | 109 |
| 1988 | 17260 | 8992 | 7964 | 4649 | 3853 | 4467 | 956 | 292 | 65 | 124 |
| 1989 | 5076 | 15961 | 6794 | 4616 | 2195 | 1770 | 1687 | 349 | 103 | 93 |
| 1990 | 6434 | 3730 | 11145 | 3599 | 1806 | 822 | 563 | 480 | 96 | 83 |
| 1991 | 11144 | 5147 | 2657 | 6196 | 1601 | 715 | 316 | 194 | 135 | 82 |
| 1992 | 11849 | 9460 | 3964 | 1733 | 2880 | 757 | 308 | 140 | 79 | 112 |
| 1993 | 27701 | 9151 | 7825 | 3138 | 976 | 1402 | 343 | 127 | 72 | 113 |
| 1994 | 43591 | 23355 | 7515 | 5586 | 2296 | 583 | 826 | 180 | 70 | 122 |
| 1995 | 11804 | 41074 | 18121 | 6169 | 3820 | 1569 | 390 | 610 | 123 | 132 |
| 1996 | 6494 | 9200 | 31506 | 13397 | 3267 | 2548 | 922 | 231 | 441 | 152 |
| 1997 | 8369 | 4992 | 7608 | 21246 | 7255 | 1146 | 875 | 243 | 65 | 195 |
| 1998 | 18047 | 6649 | 4062 | 5467 | 11797 | 2719 | 294 | 164 | 46 | 105 |
| 1999 | 25310 | 15560 | 4897 | 2863 | 3481 | 5175 | 817 | 82 | 34 | 66 |
| 2000 | 34066 | 20834 | 11778 | 2855 | 1693 | 2158 | 2086 | 224 | 20 | 47 |
| 2001 | 14786 | 30967 | 15152 | 6927 | 1452 | 1123 | 1449 | 960 | 81 | 41 |
| 2002 | 7052 | 12216 | 22589 | 8579 | 3486 | 870 | 711 | 661 | 440 | 61 |
| 2003 | 4409 | 5812 | 7963 | 11428 | 3771 | 1206 | 313 | 182 | 188 | 156 |
| 2004 | 6884 | 3373 | 4080 | 4591 | 4689 | 1302 | 345 | 101 | 59 | 159 |
| 2005 | 8712 | 5877 | 2591 | 2851 | 2896 | 1801 | 406 | 75 | 29 | 119 |
| 2006 | 6267 | 7438 | 4011 | 1493 | 1557 | 1486 | 626 | 133 | 21 | 87 |
| 2007 | 7766 | 4980 | 4868 | 2315 | 841 | 702 | 594 | 216 | 47 | 70 |
| 2008 | 10367 | 6324 | 3578 | 2897 | 1306 | 448 | 326 | 283 | 107 | 76 |
| 2009 | 14616 | 8448 | 5379 | 2284 | 1718 | 711 | 212 | 132 | 105 | 101 |
| 2010 | 4927 | 13013 | 6145 | 2282 | 1072 | 872 | 322 | 106 | 60 | 121 |
| 2011 | 1396 | 3982 | 8267 | 3178 | 912 | 432 | 298 | 108 | 39 | 103 |
| 2012 | 3288 | 1038 | 2575 | 4296 | 1389 | 364 | 178 | 122 | 41 | 93 |
| 2013 | 8265 | 2534 | 1200 | 1559 | 2064 | 558 | 116 | 62 | 42 | 79 |
| 2014 | 3425 | 7239 | 2513 | 951 | 1186 | 995 | 246 | 54 | 29 | 77 |
| 2015 | 5346 | 2756 | 5378 | 1699 | 586 | 644 | 443 | 108 | 36 | 74 |
| 2016 | 6932 | 4374 | 2508 | 3172 | 832 | 336 | 295 | 150 | 39 | 68 |
| 2017 | 11528 | 5675 | 3014 | 2047 | 1857 | 438 | 186 | 119 | 57 | 67 |
| 2018 | 8313 | 9888 | 4392 | 2501 | 1575 | 1023 | 205 | 98 | 62 | 73 |
| 2019 | 2258 | 6866 | 5847 | 2610 | 1632 | 1054 | 356 | 62 | 34 | 70 |
| 2020 | 2308 | 1560 | 4759 | 2338 | 791 | 424 | 218 | 70 | 12 | 52 |
| 2021 | 5637 | 1800 | 1497 | 2145 | 676 | 209 | 88 | 46 | 15 | 38 |
| 2022 | 4860 | 4792 | 1405 | 1086 | 866 | 199 | 60 | 28 | 20 | 32 |
| 2023 | 8052 | 3915 | 3462 | 870 | 600 | 335 | 80 | 20 | 7 | 33 |
| 2024 | 7855 | 6825 | 2650 | 2123 | 594 | 391 | 169 | 49 | 11 | 30 |
| 2025 | 7083 | 6606 | 4962 | 1978 | 1410 | 350 | 251 | 82 | 20 | 29 |