| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 83895 | 10857 | 797 |
| 1984.25 | 0 | 50538 | 6091 | 511 |
| 1984.5 | 128077 | 30193 | 3510 | 328 |
| 1984.75 | 0 | 15359 | 1530 | 213 |
| 1985 | 0 | 40211 | 6894 | 769 |
| 1985.25 | 0 | 24163 | 3202 | 469 |
| 1985.5 | 96314 | 14757 | 1824 | 303 |
| 1985.75 | 0 | 7800 | 757 | 193 |
| 1986 | 0 | 29376 | 3552 | 415 |
| 1986.25 | 0 | 17881 | 1833 | 266 |
| 1986.5 | 166462 | 11251 | 1114 | 180 |
| 1986.75 | 0 | 6398 | 566 | 121 |
| 1987 | 0 | 55648 | 3215 | 368 |
| 1987.25 | 0 | 35845 | 1695 | 231 |
| 1987.5 | 35015 | 22908 | 1040 | 157 |
| 1987.75 | 0 | 13610 | 558 | 107 |
| 1988 | 0 | 10110 | 6780 | 303 |
| 1988.25 | 0 | 6833 | 4116 | 190 |
| 1988.5 | 161171 | 4643 | 2829 | 127 |
| 1988.75 | 0 | 3030 | 1797 | 87 |
| 1989 | 0 | 50633 | 1724 | 1060 |
| 1989.25 | 0 | 32062 | 1142 | 745 |
| 1989.5 | 166147 | 20191 | 752 | 527 |
| 1989.75 | 0 | 11832 | 430 | 377 |
| 1990 | 0 | 50674 | 6312 | 514 |
| 1990.25 | 0 | 32724 | 3736 | 352 |
| 1990.5 | 201770 | 20465 | 2190 | 240 |
| 1990.75 | 0 | 12493 | 1287 | 168 |
| 1991 | 0 | 62303 | 7189 | 861 |
| 1991.25 | 0 | 39506 | 4235 | 557 |
| 1991.5 | 367963 | 25546 | 2630 | 366 |
| 1991.75 | 0 | 15788 | 1530 | 257 |
| 1992 | 0 | 115970 | 9414 | 1054 |
| 1992.25 | 0 | 73345 | 5921 | 789 |
| 1992.5 | 196032 | 46490 | 4007 | 602 |
| 1992.75 | 0 | 27133 | 2465 | 423 |
| 1993 | 0 | 59353 | 15060 | 1849 |
| 1993.25 | 0 | 35914 | 8678 | 1293 |
| 1993.5 | 170126 | 21600 | 5228 | 911 |
| 1993.75 | 0 | 11883 | 2742 | 615 |
| 1994 | 0 | 50024 | 6286 | 1787 |
| 1994.25 | 0 | 30323 | 3790 | 1179 |
| 1994.5 | 497171 | 18725 | 2387 | 790 |
| 1994.75 | 0 | 11221 | 1418 | 543 |
| 1995 | 0 | 157317 | 6541 | 1298 |
| 1995.25 | 0 | 101038 | 4167 | 987 |
| 1995.5 | 198222 | 64089 | 2673 | 752 |
| 1995.75 | 0 | 38601 | 1666 | 537 |
| 1996 | 0 | 56334 | 22204 | 1488 |
| 1996.25 | 0 | 36608 | 13866 | 1058 |
| 1996.5 | 413945 | 23254 | 9062 | 751 |
| 1996.75 | 0 | 14489 | 5678 | 523 |
| 1997 | 0 | 131483 | 9031 | 4133 |
| 1997.25 | 0 | 82819 | 5824 | 2927 |
| 1997.5 | 84946 | 55599 | 3800 | 2070 |
| 1997.75 | 0 | 34706 | 2263 | 1457 |
| 1998 | 0 | 26561 | 21406 | 2410 |
| 1998.25 | 0 | 17209 | 13360 | 1629 |
| 1998.5 | 152851 | 10961 | 8467 | 1099 |
| 1998.75 | 0 | 7171 | 5279 | 779 |
| 1999 | 0 | 50382 | 4517 | 3965 |
| 1999.25 | 0 | 33166 | 3080 | 2778 |
| 1999.5 | 356474 | 21768 | 2018 | 1929 |
| 1999.75 | 0 | 14044 | 1201 | 1321 |
| 2000 | 0 | 118338 | 8969 | 1576 |
| 2000.25 | 0 | 77636 | 6187 | 1080 |
| 2000.5 | 98228 | 52318 | 4220 | 735 |
| 2000.75 | 0 | 32767 | 2730 | 522 |
| 2001 | 0 | 29611 | 18759 | 2061 |
| 2001.25 | 0 | 18433 | 11598 | 1465 |
| 2001.5 | 101898 | 11460 | 7294 | 1036 |
| 2001.75 | 0 | 7137 | 4940 | 731 |
| 2002 | 0 | 33219 | 4259 | 3653 |
| 2002.25 | 0 | 21263 | 2654 | 2453 |
| 2002.5 | 77589 | 13056 | 1735 | 1665 |
| 2002.75 | 0 | 7678 | 1082 | 1145 |
| 2003 | 0 | 22481 | 4290 | 1371 |
| 2003.25 | 0 | 13446 | 2740 | 899 |
| 2003.5 | 29913 | 7998 | 1745 | 586 |
| 2003.75 | 0 | 4722 | 1044 | 404 |
| 2004 | 0 | 9375 | 2883 | 841 |
| 2004.25 | 0 | 5785 | 1923 | 587 |
| 2004.5 | 29894 | 3754 | 1285 | 409 |
| 2004.75 | 0 | 2302 | 809 | 286 |
| 2005 | 0 | 9480 | 1365 | 679 |
| 2005.25 | 0 | 5976 | 950 | 499 |
| 2005.5 | 116314 | 3817 | 657 | 364 |
| 2005.75 | 0 | 2497 | 445 | 261 |
| 2006 | 0 | 37040 | 1688 | 478 |
| 2006.25 | 0 | 23428 | 1224 | 349 |
| 2006.5 | 87439 | 15216 | 859 | 252 |
| 2006.75 | 0 | 9882 | 552 | 178 |
| 2007 | 0 | 27535 | 5834 | 457 |
| 2007.25 | 0 | 17619 | 3863 | 349 |
| 2007.5 | 122923 | 11152 | 2557 | 269 |
| 2007.75 | 0 | 7102 | 1695 | 192 |
| 2008 | 0 | 40055 | 4686 | 1292 |
| 2008.25 | 0 | 26640 | 3298 | 925 |
| 2008.5 | 193343 | 17701 | 2265 | 665 |
| 2008.75 | 0 | 11901 | 1480 | 458 |
| 2009 | 0 | 69765 | 7575 | 1282 |
| 2009.25 | 0 | 45199 | 5161 | 879 |
| 2009.5 | 275271 | 30374 | 3470 | 598 |
| 2009.75 | 0 | 20116 | 2115 | 418 |
| 2010 | 0 | 93462 | 13607 | 1654 |
| 2010.25 | 0 | 63574 | 10439 | 1175 |
| 2010.5 | 24447 | 40974 | 7321 | 826 |
| 2010.75 | 0 | 25104 | 4806 | 576 |
| 2011 | 0 | 8091 | 15045 | 3508 |
| 2011.25 | 0 | 5314 | 9589 | 2419 |
| 2011.5 | 41496 | 3629 | 6491 | 1686 |
| 2011.75 | 0 | 2379 | 4325 | 1182 |
| 2012 | 0 | 13717 | 1576 | 3848 |
| 2012.25 | 0 | 8930 | 1094 | 2782 |
| 2012.5 | 205237 | 5928 | 774 | 2016 |
| 2012.75 | 0 | 4050 | 536 | 1428 |
| 2013 | 0 | 67656 | 2510 | 1320 |
| 2013.25 | 0 | 44205 | 1790 | 911 |
| 2013.5 | 61517 | 27177 | 1234 | 626 |
| 2013.75 | 0 | 16042 | 778 | 436 |
| 2014 | 0 | 18991 | 8649 | 710 |
| 2014.25 | 0 | 11966 | 5389 | 487 |
| 2014.5 | 328414 | 7577 | 3338 | 332 |
| 2014.75 | 0 | 4829 | 2002 | 226 |
| 2015 | 0 | 101079 | 2870 | 1337 |
| 2015.25 | 0 | 61311 | 1856 | 941 |
| 2015.5 | 125617 | 36541 | 1195 | 660 |
| 2015.75 | 0 | 20349 | 677 | 450 |
| 2016 | 0 | 37982 | 11106 | 681 |
| 2016.25 | 0 | 22662 | 7032 | 472 |
| 2016.5 | 224196 | 13083 | 4346 | 323 |
| 2016.75 | 0 | 7046 | 2593 | 219 |
| 2017 | 0 | 68554 | 3665 | 1652 |
| 2017.25 | 0 | 40077 | 2363 | 1146 |
| 2017.5 | 71990 | 23482 | 1527 | 791 |
| 2017.75 | 0 | 13200 | 924 | 550 |
| 2018 | 0 | 20653 | 7233 | 915 |
| 2018.25 | 0 | 12793 | 4428 | 597 |
| 2018.5 | 257705 | 7792 | 2666 | 385 |
| 2018.75 | 0 | 4836 | 1584 | 259 |
| 2019 | 0 | 78965 | 2864 | 1016 |
| 2019.25 | 0 | 49622 | 1990 | 702 |
| 2019.5 | 339347 | 30916 | 1252 | 474 |
| 2019.75 | 0 | 19092 | 755 | 324 |
| 2020 | 0 | 107482 | 11160 | 684 |
| 2020.25 | 0 | 66920 | 7262 | 479 |
| 2020.5 | 201645 | 42112 | 4571 | 330 |
| 2020.75 | 0 | 25167 | 2731 | 232 |
| 2021 | 0 | 60270 | 14100 | 1765 |
| 2021.25 | 0 | 36760 | 8695 | 1257 |
| 2021.5 | 80925 | 22057 | 5168 | 885 |
| 2021.75 | 0 | 12587 | 3090 | 616 |
| 2022 | 0 | 24785 | 6827 | 2129 |
| 2022.25 | 0 | 16328 | 4163 | 1462 |
| 2022.5 | 153090 | 10464 | 2571 | 998 |
| 2022.75 | 0 | 6369 | 1539 | 682 |
| 2023 | 0 | 45836 | 3678 | 1275 |
| 2023.25 | 0 | 29192 | 2334 | 873 |
| 2023.5 | 29947 | 17371 | 1471 | 598 |
| 2023.75 | 0 | 10004 | 891 | 422 |
| 2024 | 0 | 8213 | 5742 | 872 |
| 2024.25 | 0 | 4454 | 3515 | 604 |
| 2024.5 | 27967 | 2640 | 2183 | 417 |
| 2024.75 | 0 | 1636 | 1368 | 293 |
| 2025 | 0 | 8784 | 1028 | 1055 |
| 2025.25 | 0 | 5366 | 692 | 748 |
| 2025.5 | 32586 | 3318 | 448 | 526 |
| 2025.75 | 0 | 2106 | 297 | 370 |