| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 48609 | 10499 | 747 |
| 1984.25 | 0 | 33328 | 5914 | 435 |
| 1984.5 | 42112 | 22973 | 3474 | 252 |
| 1984.75 | 0 | 13283 | 1530 | 146 |
| 1985 | 0 | 23326 | 6847 | 730 |
| 1985.25 | 0 | 15865 | 3187 | 407 |
| 1985.5 | 31560 | 11260 | 1806 | 238 |
| 1985.75 | 0 | 6761 | 741 | 136 |
| 1986 | 0 | 16944 | 3520 | 364 |
| 1986.25 | 0 | 11634 | 1841 | 211 |
| 1986.5 | 51299 | 8464 | 1137 | 130 |
| 1986.75 | 0 | 5494 | 585 | 78 |
| 1987 | 0 | 30512 | 3135 | 344 |
| 1987.25 | 0 | 22449 | 1648 | 197 |
| 1987.5 | 10583 | 16774 | 1009 | 122 |
| 1987.75 | 0 | 11500 | 535 | 76 |
| 1988 | 0 | 5341 | 6559 | 268 |
| 1988.25 | 0 | 4195 | 3999 | 152 |
| 1988.5 | 49099 | 3370 | 2770 | 92 |
| 1988.75 | 0 | 2575 | 1762 | 56 |
| 1989 | 0 | 27361 | 1714 | 1025 |
| 1989.25 | 0 | 20106 | 1150 | 655 |
| 1989.5 | 50330 | 14766 | 774 | 422 |
| 1989.75 | 0 | 10031 | 455 | 273 |
| 1990 | 0 | 27086 | 6198 | 443 |
| 1990.25 | 0 | 20203 | 3693 | 276 |
| 1990.5 | 63160 | 14661 | 2201 | 171 |
| 1990.75 | 0 | 10338 | 1292 | 109 |
| 1991 | 0 | 34583 | 6851 | 813 |
| 1991.25 | 0 | 25251 | 4077 | 475 |
| 1991.5 | 113538 | 18964 | 2556 | 281 |
| 1991.75 | 0 | 13554 | 1476 | 178 |
| 1992 | 0 | 63550 | 9341 | 948 |
| 1992.25 | 0 | 46292 | 5987 | 654 |
| 1992.5 | 60303 | 34135 | 4128 | 458 |
| 1992.75 | 0 | 22986 | 2570 | 290 |
| 1993 | 0 | 32376 | 14744 | 1811 |
| 1993.25 | 0 | 22603 | 8451 | 1159 |
| 1993.5 | 52599 | 15804 | 5075 | 745 |
| 1993.75 | 0 | 9943 | 2616 | 456 |
| 1994 | 0 | 27302 | 6030 | 1576 |
| 1994.25 | 0 | 19152 | 3683 | 942 |
| 1994.5 | 148701 | 13779 | 2347 | 570 |
| 1994.75 | 0 | 9602 | 1412 | 352 |
| 1995 | 0 | 83628 | 6563 | 1141 |
| 1995.25 | 0 | 62401 | 4264 | 799 |
| 1995.5 | 59116 | 46111 | 2800 | 558 |
| 1995.75 | 0 | 32075 | 1756 | 360 |
| 1996 | 0 | 29439 | 21428 | 1399 |
| 1996.25 | 0 | 22295 | 13439 | 905 |
| 1996.5 | 128564 | 16581 | 8821 | 585 |
| 1996.75 | 0 | 12039 | 5561 | 368 |
| 1997 | 0 | 73136 | 8788 | 3945 |
| 1997.25 | 0 | 53717 | 5708 | 2547 |
| 1997.5 | 24662 | 42166 | 3765 | 1639 |
| 1997.75 | 0 | 30576 | 2268 | 1050 |
| 1998 | 0 | 13731 | 22029 | 2089 |
| 1998.25 | 0 | 10349 | 13813 | 1283 |
| 1998.5 | 45416 | 7675 | 8810 | 784 |
| 1998.75 | 0 | 5852 | 5530 | 504 |
| 1999 | 0 | 26949 | 4308 | 3921 |
| 1999.25 | 0 | 20721 | 2961 | 2518 |
| 1999.5 | 107950 | 15849 | 1961 | 1599 |
| 1999.75 | 0 | 11955 | 1177 | 1002 |
| 2000 | 0 | 64527 | 8914 | 1302 |
| 2000.25 | 0 | 49715 | 6195 | 813 |
| 2000.5 | 29834 | 39310 | 4268 | 503 |
| 2000.75 | 0 | 28592 | 2783 | 324 |
| 2001 | 0 | 15966 | 19055 | 1943 |
| 2001.25 | 0 | 11559 | 11912 | 1258 |
| 2001.5 | 29755 | 8367 | 7576 | 808 |
| 2001.75 | 0 | 6089 | 5174 | 518 |
| 2002 | 0 | 17385 | 4230 | 3654 |
| 2002.25 | 0 | 12967 | 2646 | 2245 |
| 2002.5 | 24253 | 9311 | 1731 | 1393 |
| 2002.75 | 0 | 6352 | 1091 | 882 |
| 2003 | 0 | 12362 | 4105 | 1172 |
| 2003.25 | 0 | 8543 | 2616 | 704 |
| 2003.5 | 9357 | 5883 | 1663 | 420 |
| 2003.75 | 0 | 4011 | 987 | 266 |
| 2004 | 0 | 5236 | 2812 | 704 |
| 2004.25 | 0 | 3754 | 1880 | 452 |
| 2004.5 | 8893 | 2837 | 1265 | 289 |
| 2004.75 | 0 | 1998 | 796 | 184 |
| 2005 | 0 | 5032 | 1359 | 591 |
| 2005.25 | 0 | 3700 | 952 | 401 |
| 2005.5 | 35463 | 2760 | 662 | 269 |
| 2005.75 | 0 | 2108 | 452 | 177 |
| 2006 | 0 | 20259 | 1665 | 416 |
| 2006.25 | 0 | 14946 | 1230 | 279 |
| 2006.5 | 25420 | 11326 | 879 | 184 |
| 2006.75 | 0 | 8570 | 574 | 118 |
| 2007 | 0 | 14255 | 5886 | 423 |
| 2007.25 | 0 | 10693 | 3920 | 298 |
| 2007.5 | 35915 | 7939 | 2604 | 211 |
| 2007.75 | 0 | 5926 | 1728 | 138 |
| 2008 | 0 | 21008 | 4595 | 1269 |
| 2008.25 | 0 | 16396 | 3269 | 831 |
| 2008.5 | 53507 | 12780 | 2267 | 546 |
| 2008.75 | 0 | 10130 | 1499 | 343 |
| 2009 | 0 | 35115 | 7630 | 1200 |
| 2009.25 | 0 | 26957 | 5204 | 748 |
| 2009.5 | 79141 | 21387 | 3502 | 463 |
| 2009.75 | 0 | 16612 | 2160 | 295 |
| 2010 | 0 | 48393 | 13187 | 1576 |
| 2010.25 | 0 | 39111 | 10184 | 1022 |
| 2010.5 | 7244 | 29873 | 7192 | 655 |
| 2010.75 | 0 | 21558 | 4759 | 417 |
| 2011 | 0 | 4317 | 15254 | 3339 |
| 2011.25 | 0 | 3330 | 9904 | 2084 |
| 2011.5 | 12202 | 2683 | 6836 | 1315 |
| 2011.75 | 0 | 2083 | 4648 | 839 |
| 2012 | 0 | 7251 | 1636 | 3817 |
| 2012.25 | 0 | 5574 | 1154 | 2552 |
| 2012.5 | 60471 | 4382 | 832 | 1710 |
| 2012.75 | 0 | 3538 | 587 | 1125 |
| 2013 | 0 | 35572 | 2602 | 1108 |
| 2013.25 | 0 | 27334 | 1869 | 705 |
| 2013.5 | 18107 | 19759 | 1298 | 446 |
| 2013.75 | 0 | 13658 | 829 | 286 |
| 2014 | 0 | 9943 | 8640 | 636 |
| 2014.25 | 0 | 7375 | 5419 | 398 |
| 2014.5 | 100840 | 5487 | 3372 | 247 |
| 2014.75 | 0 | 4119 | 2047 | 153 |
| 2015 | 0 | 54952 | 2890 | 1315 |
| 2015.25 | 0 | 38922 | 1883 | 848 |
| 2015.5 | 38579 | 27093 | 1219 | 545 |
| 2015.75 | 0 | 17362 | 699 | 340 |
| 2016 | 0 | 20693 | 10917 | 604 |
| 2016.25 | 0 | 14469 | 6932 | 383 |
| 2016.5 | 67759 | 9786 | 4289 | 239 |
| 2016.75 | 0 | 6117 | 2575 | 148 |
| 2017 | 0 | 36532 | 3707 | 1591 |
| 2017.25 | 0 | 24981 | 2410 | 1007 |
| 2017.5 | 22273 | 17109 | 1568 | 634 |
| 2017.75 | 0 | 11077 | 961 | 403 |
| 2018 | 0 | 11237 | 6996 | 824 |
| 2018.25 | 0 | 8109 | 4275 | 489 |
| 2018.5 | 77799 | 5744 | 2563 | 286 |
| 2018.75 | 0 | 4152 | 1512 | 175 |
| 2019 | 0 | 42099 | 2871 | 916 |
| 2019.25 | 0 | 30938 | 2020 | 577 |
| 2019.5 | 101918 | 22368 | 1295 | 354 |
| 2019.75 | 0 | 16078 | 796 | 220 |
| 2020 | 0 | 57454 | 10981 | 630 |
| 2020.25 | 0 | 41865 | 7226 | 402 |
| 2020.5 | 63561 | 30685 | 4586 | 252 |
| 2020.75 | 0 | 21260 | 2761 | 161 |
| 2021 | 0 | 33536 | 13829 | 1728 |
| 2021.25 | 0 | 23797 | 8578 | 1125 |
| 2021.5 | 25152 | 16579 | 5117 | 722 |
| 2021.75 | 0 | 10926 | 3080 | 459 |
| 2022 | 0 | 13692 | 6837 | 2007 |
| 2022.25 | 0 | 10537 | 4172 | 1264 |
| 2022.5 | 44319 | 7897 | 2568 | 790 |
| 2022.75 | 0 | 5576 | 1530 | 495 |
| 2023 | 0 | 23007 | 3737 | 1122 |
| 2023.25 | 0 | 16332 | 2399 | 702 |
| 2023.5 | 10895 | 10815 | 1526 | 439 |
| 2023.75 | 0 | 6780 | 932 | 283 |
| 2024 | 0 | 5362 | 4237 | 794 |
| 2024.25 | 0 | 3336 | 2762 | 514 |
| 2024.5 | 7975 | 2242 | 1827 | 332 |
| 2024.75 | 0 | 1648 | 1194 | 212 |