| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 
| 1960 | 119458 | 128954 | 61101 | 30098 | 26372 | 13974 | 10039 | 6920 | 3422 | 11209 | 
| 1961 | 163297 | 71040 | 78585 | 32192 | 17615 | 15579 | 8541 | 6626 | 4833 | 10623 | 
| 1962 | 293317 | 84578 | 41859 | 47632 | 19003 | 12366 | 10853 | 5857 | 4892 | 11895 | 
| 1963 | 390273 | 165678 | 44117 | 27277 | 29191 | 11704 | 9432 | 7780 | 4236 | 12790 | 
| 1964 | 113411 | 240057 | 88501 | 24165 | 18008 | 18603 | 7734 | 7082 | 5790 | 13209 | 
| 1965 | 363236 | 62109 | 128773 | 48534 | 14850 | 11450 | 11829 | 4777 | 4887 | 13297 | 
| 1966 | 189013 | 227130 | 39313 | 68017 | 27038 | 9211 | 7246 | 6929 | 3012 | 12112 | 
| 1967 | 247767 | 104118 | 127462 | 21763 | 37725 | 15869 | 6081 | 4976 | 4317 | 9716 | 
| 1968 | 203327 | 147089 | 54636 | 69598 | 13420 | 23692 | 9709 | 3915 | 3185 | 7982 | 
| 1969 | 375744 | 110091 | 92409 | 34355 | 43818 | 10673 | 17306 | 6698 | 2551 | 6658 | 
| 1970 | 305938 | 208291 | 66218 | 58832 | 23183 | 29755 | 8964 | 13536 | 4917 | 7009 | 
| 1971 | 315622 | 177640 | 99831 | 38150 | 33814 | 14312 | 17221 | 6298 | 8884 | 7725 | 
| 1972 | 207792 | 170388 | 98314 | 50267 | 23723 | 19558 | 9367 | 10025 | 4122 | 9836 | 
| 1973 | 269350 | 97324 | 90247 | 56507 | 28812 | 15457 | 12404 | 6567 | 6142 | 8738 | 
| 1974 | 130444 | 133430 | 47044 | 49568 | 33945 | 16878 | 10067 | 7985 | 4119 | 8836 | 
| 1975 | 217598 | 52708 | 59829 | 21373 | 24633 | 17972 | 9119 | 5838 | 4600 | 7012 | 
| 1976 | 283962 | 89740 | 21796 | 27749 | 10889 | 11462 | 8492 | 4536 | 2949 | 5624 | 
| 1977 | 263137 | 108115 | 35064 | 9080 | 13835 | 5497 | 5573 | 4114 | 2212 | 4105 | 
| 1978 | 176112 | 106975 | 43450 | 16164 | 4767 | 7354 | 3144 | 2990 | 2302 | 3866 | 
| 1979 | 255851 | 71269 | 43595 | 18480 | 7976 | 2380 | 3942 | 1701 | 1484 | 3332 | 
| 1980 | 154533 | 113350 | 26495 | 18140 | 8869 | 3684 | 1110 | 1993 | 926 | 2602 | 
| 1981 | 304042 | 67512 | 48988 | 10767 | 8575 | 4446 | 1805 | 666 | 1025 | 1787 | 
| 1982 | 167762 | 147369 | 27245 | 20990 | 4888 | 4412 | 2209 | 1005 | 384 | 1601 | 
| 1983 | 132090 | 80526 | 59829 | 10576 | 9701 | 2616 | 2470 | 1214 | 586 | 1274 | 
| 1984 | 122822 | 68328 | 34121 | 21885 | 4454 | 4613 | 1286 | 1303 | 690 | 1047 | 
| 1985 | 138469 | 50087 | 26055 | 13809 | 7285 | 1948 | 2065 | 543 | 592 | 818 | 
| 1986 | 244880 | 59210 | 19965 | 11862 | 6240 | 2464 | 935 | 934 | 261 | 624 | 
| 1987 | 197446 | 158755 | 25360 | 8950 | 5708 | 2830 | 845 | 467 | 414 | 460 | 
| 1988 | 109441 | 121737 | 85392 | 11910 | 3591 | 2076 | 1308 | 226 | 194 | 291 | 
| 1989 | 105199 | 65564 | 62548 | 41727 | 5061 | 1208 | 810 | 598 | 51 | 283 | 
| 1990 | 118251 | 56518 | 32929 | 28209 | 19471 | 2465 | 592 | 450 | 358 | 214 | 
| 1991 | 313927 | 57769 | 24607 | 16083 | 11624 | 8592 | 1225 | 293 | 257 | 320 | 
| 1992 | 399648 | 172342 | 25078 | 11580 | 8052 | 5089 | 4640 | 635 | 165 | 370 | 
| 1993 | 302738 | 260958 | 85689 | 10811 | 4411 | 3145 | 1942 | 2255 | 273 | 237 | 
| 1994 | 218591 | 200239 | 148898 | 39856 | 4491 | 1735 | 1462 | 743 | 1202 | 266 | 
| 1995 | 407668 | 164152 | 126574 | 80178 | 16082 | 1860 | 784 | 755 | 296 | 802 | 
| 1996 | 234585 | 307006 | 100155 | 72948 | 41258 | 7990 | 1019 | 471 | 433 | 691 | 
| 1997 | 251574 | 152427 | 204358 | 62320 | 41227 | 21455 | 4072 | 491 | 251 | 617 | 
| 1998 | 152248 | 173638 | 96316 | 137278 | 33917 | 24076 | 12573 | 2479 | 322 | 620 | 
| 1999 | 354225 | 98022 | 109855 | 57635 | 76156 | 18422 | 14666 | 7412 | 1432 | 573 | 
| 2000 | 231388 | 240414 | 57435 | 59830 | 32276 | 40698 | 11085 | 9274 | 4223 | 1113 | 
| 2001 | 311048 | 131757 | 157073 | 37109 | 34019 | 19029 | 23607 | 7003 | 5835 | 3113 | 
| 2002 | 486091 | 221167 | 86808 | 97988 | 23957 | 20477 | 12337 | 14481 | 4326 | 5744 | 
| 2003 | 213076 | 366948 | 137365 | 53071 | 57282 | 16788 | 12379 | 8301 | 8775 | 6328 | 
| 2004 | 188060 | 150104 | 202897 | 92391 | 34467 | 35829 | 10521 | 7143 | 5249 | 8849 | 
| 2005 | 630213 | 138230 | 86830 | 120144 | 59022 | 22851 | 21444 | 6551 | 3653 | 7366 | 
| 2006 | 105112 | 424007 | 86008 | 48877 | 73944 | 35177 | 14119 | 12042 | 3727 | 5946 | 
| 2007 | 146802 | 65783 | 239416 | 52342 | 29754 | 39402 | 19491 | 7870 | 6007 | 4319 | 
| 2008 | 329116 | 86031 | 45665 | 115977 | 30435 | 16261 | 19348 | 10461 | 3978 | 4971 | 
| 2009 | 193070 | 204492 | 47531 | 28066 | 61538 | 15648 | 7653 | 8950 | 5130 | 4148 | 
| 2010 | 424828 | 110984 | 109677 | 29566 | 14702 | 32303 | 7567 | 3624 | 3990 | 4278 | 
| 2011 | 179627 | 271861 | 53790 | 55398 | 15879 | 8194 | 15358 | 3787 | 1774 | 3862 | 
| 2012 | 214736 | 123499 | 146296 | 32775 | 27045 | 8991 | 4323 | 7416 | 1847 | 2818 | 
| 2013 | 360506 | 106032 | 79549 | 86206 | 18514 | 13772 | 4865 | 2369 | 3749 | 2464 | 
| 2014 | 157218 | 244477 | 63726 | 48758 | 48190 | 10845 | 7674 | 3012 | 1396 | 3597 | 
| 2015 | 243170 | 96566 | 150297 | 42620 | 30121 | 27187 | 6228 | 4366 | 1867 | 3174 | 
| 2016 | 378930 | 145183 | 60002 | 82857 | 27557 | 17735 | 15332 | 3603 | 2800 | 3676 | 
| 2017 | 280991 | 273984 | 93279 | 34325 | 45932 | 15918 | 10117 | 8355 | 2000 | 4559 | 
| 2018 | 217115 | 201300 | 196068 | 61388 | 23189 | 24232 | 9312 | 5925 | 4767 | 4234 | 
| 2019 | 410064 | 171321 | 128967 | 125040 | 34087 | 13481 | 12782 | 5253 | 3280 | 5296 | 
| 2020 | 198112 | 310354 | 124723 | 86745 | 69875 | 20190 | 8055 | 7248 | 3073 | 5484 | 
| 2021 | 231791 | 128236 | 231171 | 84995 | 53748 | 42460 | 11907 | 4858 | 4355 | 5796 | 
| 2022 | 236558 | 156088 | 98088 | 153326 | 53812 | 30817 | 24358 | 6694 | 2732 | 6423 | 
| pred | 155151 | 100132 | 62681 | 94911 | 31763 | 18235 | 14601 | 4053 | 5648 | |