| Table 3. Estimated stock numbers at age. | |||||||||||||
| Year Age | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| 1946 | 1118705 | 684402 | 376095 | 171743 | 77615 | 85717 | 226590 | 88702 | 34146 | 31617 | 17102 | 7731 | 2616 |
| 1947 | 606990 | 668821 | 505847 | 307474 | 135698 | 53834 | 57766 | 135147 | 53157 | 18573 | 17037 | 8690 | 5900 |
| 1948 | 450421 | 348506 | 458049 | 344226 | 213473 | 75630 | 35680 | 31099 | 70040 | 19242 | 8520 | 6879 | 6043 |
| 1949 | 665916 | 291722 | 271715 | 362570 | 230137 | 105827 | 42733 | 17720 | 16872 | 29371 | 7719 | 3227 | 3993 |
| 1950 | 1015895 | 419236 | 230474 | 189702 | 208176 | 113650 | 58068 | 22453 | 9281 | 6435 | 12383 | 2733 | 2071 |
| 1951 | 2347123 | 773957 | 327375 | 179788 | 115908 | 112274 | 65150 | 28940 | 10566 | 3057 | 2126 | 4563 | 1124 |
| 1952 | 2318293 | 1091750 | 465902 | 198834 | 119413 | 62588 | 62093 | 32384 | 13644 | 4253 | 1058 | 732 | 1308 |
| 1953 | 2408053 | 1117333 | 612840 | 238703 | 91104 | 60739 | 33593 | 29089 | 13183 | 4534 | 1290 | 365 | 434 |
| 1954 | 868392 | 1381741 | 715893 | 377979 | 137045 | 48952 | 34854 | 17559 | 13326 | 4955 | 1714 | 490 | 232 |
| 1955 | 378782 | 578985 | 923654 | 444218 | 226021 | 75895 | 30555 | 18144 | 7183 | 4984 | 1870 | 651 | 232 |
| 1956 | 765497 | 242064 | 417332 | 568498 | 216225 | 114428 | 35974 | 14658 | 7098 | 2345 | 1860 | 716 | 303 |
| 1957 | 1433137 | 415409 | 147417 | 208817 | 236229 | 96143 | 49044 | 15634 | 5774 | 2331 | 670 | 646 | 367 |
| 1958 | 910099 | 719851 | 253752 | 96039 | 101262 | 108441 | 41366 | 23116 | 6457 | 1926 | 757 | 223 | 400 |
| 1959 | 1336878 | 472404 | 437061 | 142131 | 47194 | 48242 | 55263 | 20432 | 9286 | 2330 | 638 | 319 | 277 |
| 1960 | 1515374 | 640020 | 243988 | 204660 | 69364 | 23064 | 23397 | 25576 | 8190 | 3771 | 888 | 261 | 270 |
| 1961 | 1564632 | 727119 | 358989 | 132355 | 102588 | 36296 | 11236 | 12221 | 9991 | 2842 | 1479 | 383 | 214 |
| 1962 | 1222542 | 822500 | 408254 | 176747 | 64547 | 49487 | 15497 | 4593 | 4620 | 3323 | 940 | 583 | 229 |
| 1963 | 922958 | 682673 | 469449 | 173078 | 65781 | 29096 | 21006 | 5654 | 1396 | 1571 | 1175 | 354 | 320 |
| 1964 | 469715 | 420570 | 356685 | 174040 | 55485 | 22690 | 10784 | 7129 | 1542 | 378 | 558 | 454 | 267 |
| 1965 | 878943 | 248688 | 265454 | 199067 | 82138 | 24163 | 8750 | 3377 | 2441 | 470 | 133 | 187 | 277 |
| 1966 | 1910570 | 566000 | 164102 | 145910 | 106595 | 44253 | 11041 | 3232 | 1186 | 931 | 197 | 44 | 169 |
| 1967 | 1348408 | 1320171 | 392988 | 104331 | 80330 | 55600 | 20659 | 4319 | 1200 | 496 | 408 | 75 | 84 |
| 1968 | 182521 | 1045705 | 931628 | 292887 | 72582 | 41863 | 23727 | 7501 | 1587 | 452 | 213 | 153 | 71 |
| 1969 | 111134 | 137364 | 735685 | 507180 | 161053 | 41793 | 19352 | 8499 | 2755 | 632 | 209 | 78 | 98 |
| 1970 | 211139 | 86334 | 88120 | 378331 | 239870 | 64560 | 15444 | 5748 | 2785 | 936 | 276 | 81 | 77 |
| 1971 | 408239 | 148525 | 57913 | 45170 | 172881 | 104136 | 22417 | 4786 | 1807 | 1054 | 435 | 112 | 69 |
| 1972 | 1087470 | 315498 | 105889 | 37376 | 27173 | 80943 | 36926 | 6763 | 1616 | 672 | 481 | 188 | 80 |
| 1973 | 1669448 | 785796 | 213413 | 64033 | 21366 | 15807 | 32580 | 10078 | 1934 | 536 | 282 | 186 | 117 |
| 1974 | 572374 | 1145450 | 546032 | 124551 | 35371 | 11486 | 6761 | 10119 | 3490 | 706 | 222 | 114 | 134 |
| 1975 | 622104 | 367536 | 642979 | 267976 | 62589 | 18377 | 5403 | 3000 | 3300 | 1115 | 286 | 75 | 109 |
| 1976 | 591809 | 461308 | 226360 | 300525 | 109866 | 26383 | 7456 | 2279 | 1270 | 971 | 402 | 94 | 84 |
| 1977 | 372322 | 403024 | 289361 | 114427 | 135637 | 43943 | 9002 | 2596 | 1013 | 501 | 327 | 142 | 76 |
| 1978 | 621631 | 248304 | 216160 | 115602 | 48491 | 56039 | 14325 | 2356 | 922 | 353 | 198 | 103 | 82 |
| 1979 | 197868 | 442249 | 156176 | 87997 | 41436 | 18020 | 18456 | 3432 | 737 | 203 | 111 | 55 | 63 |
| 1980 | 128605 | 151486 | 297470 | 90142 | 38674 | 16442 | 6656 | 5036 | 1031 | 171 | 56 | 33 | 36 |
| 1981 | 142060 | 101015 | 108273 | 168936 | 40377 | 15324 | 6144 | 2064 | 1450 | 248 | 52 | 16 | 23 |
| 1982 | 183384 | 122943 | 81847 | 62102 | 80689 | 15544 | 4735 | 1634 | 673 | 401 | 78 | 16 | 14 |
| 1983 | 145096 | 137068 | 89903 | 50235 | 28340 | 27354 | 4956 | 1307 | 592 | 244 | 126 | 28 | 11 |
| 1984 | 447181 | 118456 | 83918 | 53132 | 24022 | 9937 | 7350 | 1316 | 473 | 245 | 98 | 45 | 13 |
| 1985 | 541580 | 394664 | 85489 | 46267 | 24150 | 6035 | 2617 | 1985 | 431 | 182 | 100 | 41 | 20 |
| 1986 | 1506227 | 408457 | 244899 | 48185 | 20553 | 7304 | 1452 | 851 | 773 | 167 | 77 | 45 | 20 |
| 1987 | 368179 | 1056819 | 259109 | 112832 | 17486 | 6916 | 1767 | 472 | 280 | 265 | 61 | 35 | 19 |
| 1988 | 335344 | 243527 | 575027 | 120511 | 35403 | 5272 | 1701 | 572 | 145 | 93 | 85 | 26 | 14 |
| 1989 | 160217 | 229032 | 149016 | 295238 | 56208 | 10495 | 1611 | 519 | 159 | 50 | 33 | 32 | 11 |
| 1990 | 132907 | 129937 | 128232 | 95416 | 138724 | 22527 | 3248 | 636 | 165 | 62 | 19 | 13 | 10 |
| 1991 | 293372 | 127592 | 99060 | 86183 | 62677 | 83920 | 11125 | 1474 | 279 | 66 | 26 | 8 | 6 |
| 1992 | 724353 | 267016 | 103566 | 70588 | 49697 | 34629 | 48143 | 5765 | 814 | 138 | 26 | 11 | 4 |
| 1993 | 1053301 | 507628 | 244785 | 75077 | 37770 | 23917 | 15773 | 25252 | 2955 | 420 | 56 | 12 | 4 |
| 1994 | 794345 | 788893 | 413826 | 146799 | 40165 | 16101 | 10841 | 6307 | 10814 | 1261 | 157 | 22 | 4 |
| 1995 | 556253 | 516715 | 550058 | 236627 | 61080 | 12642 | 5356 | 3588 | 2169 | 3408 | 414 | 57 | 7 |
| 1996 | 412512 | 311397 | 344544 | 284487 | 103822 | 19578 | 4281 | 1613 | 1129 | 614 | 1125 | 139 | 17 |
| 1997 | 807781 | 212764 | 210161 | 186299 | 121723 | 37662 | 5989 | 1581 | 425 | 348 | 198 | 350 | 45 |
| 1998 | 1106974 | 492906 | 130946 | 98127 | 70022 | 42610 | 9059 | 1652 | 360 | 130 | 100 | 61 | 118 |
| 1999 | 646859 | 611610 | 268390 | 65003 | 32698 | 26410 | 11529 | 2468 | 355 | 104 | 43 | 34 | 63 |
| 2000 | 784603 | 415771 | 378196 | 122810 | 24829 | 11326 | 7394 | 2774 | 594 | 112 | 34 | 17 | 37 |
| 2001 | 607336 | 555621 | 292246 | 184149 | 51769 | 9045 | 3434 | 1980 | 705 | 212 | 36 | 15 | 22 |
| 2002 | 379231 | 436195 | 370832 | 187454 | 83206 | 20253 | 3030 | 1234 | 546 | 266 | 79 | 18 | 14 |
| 2003 | 794178 | 294291 | 289256 | 233239 | 83777 | 30396 | 6727 | 1138 | 430 | 243 | 98 | 43 | 13 |
| 2004 | 247242 | 588932 | 218426 | 185233 | 113188 | 34184 | 10979 | 2539 | 435 | 205 | 106 | 53 | 23 |
| 2005 | 671151 | 187220 | 406762 | 139817 | 94551 | 38964 | 11463 | 3939 | 816 | 187 | 86 | 61 | 34 |
| 2006 | 507467 | 444771 | 141890 | 228714 | 68776 | 34593 | 13786 | 3507 | 1310 | 349 | 73 | 49 | 48 |
| 2007 | 1131299 | 418598 | 293699 | 88799 | 114604 | 30813 | 12929 | 4740 | 1237 | 535 | 136 | 39 | 46 |
| 2008 | 943286 | 936159 | 326160 | 163314 | 51095 | 60770 | 15374 | 5756 | 1956 | 547 | 199 | 73 | 42 |
| 2009 | 552235 | 740257 | 722863 | 243660 | 87068 | 33065 | 28791 | 7773 | 2969 | 914 | 221 | 104 | 61 |
| 2010 | 197303 | 435425 | 620172 | 545325 | 162715 | 53612 | 18233 | 14354 | 4465 | 1557 | 337 | 113 | 91 |
| 2011 | 346208 | 177687 | 373011 | 523256 | 380098 | 83798 | 30544 | 9874 | 7589 | 1821 | 720 | 146 | 115 |
| 2012 | 489966 | 270296 | 146053 | 311504 | 397675 | 215945 | 43221 | 15313 | 4788 | 3319 | 866 | 346 | 154 |
| 2013 | 447737 | 368451 | 224990 | 128237 | 237569 | 271816 | 137437 | 21586 | 7633 | 2127 | 1610 | 425 | 316 |
| 2014 | 865508 | 346985 | 295435 | 182820 | 102707 | 171467 | 147616 | 63656 | 10203 | 3336 | 1002 | 820 | 438 |
| 2015 | 448837 | 575481 | 302788 | 216062 | 131380 | 67232 | 99344 | 72997 | 28710 | 4814 | 1474 | 491 | 711 |
| 2016 | 278194 | 316673 | 417988 | 217206 | 136338 | 75890 | 43075 | 53767 | 32778 | 10529 | 2016 | 690 | 636 |
| 2017 | 755007 | 234739 | 232091 | 288800 | 145866 | 81016 | 40775 | 23925 | 21948 | 12241 | 4191 | 874 | 619 |
| 2018 | 497403 | 538868 | 187346 | 163125 | 189072 | 83815 | 39484 | 22091 | 10716 | 6708 | 4256 | 1639 | 616 |
| 2019 | 640744 | 370812 | 396526 | 149987 | 92269 | 110424 | 43825 | 19716 | 8860 | 3557 | 1971 | 1424 | 832 |
| 2020 | 526991 | 420355 | 278984 | 249470 | 99944 | 54491 | 54949 | 21351 | 8352 | 3076 | 1124 | 683 | 808 |
| 2021 | 364959 | 338361 | 311909 | 193590 | 146495 | 52538 | 26662 | 22714 | 8138 | 2566 | 971 | 343 | 521 |
| 2022 | 189589 | 246697 | 243557 | 197529 | 120236 | 74760 | 22547 | 9878 | 6476 | 2235 | 634 | 241 | 234 |
| 2023 | 235706 | 143940 | 163860 | 140154 | 108489 | 60243 | 32257 | 8316 | 2696 | 1552 | 388 | 114 | 115 |
| 2024 | 618991 | 179433 | 106144 | 97660 | 80169 | 49657 | 28577 | 10914 | 2151 | 607 | 263 | 73 | 45 |
| 2025 | 374318 | 399291 | 125006 | 62534 | 53605 | 40474 | 22316 | 9809 | 3275 | 628 | 123 | 56 | 26 |
| 2026 | 132286 | 274944 | 303636 | 89257 | 38289 | 29157 | 19601 | 8969 | 2772 | 1143 | 124 | 26 | 19 |