| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 51691 | 9917 | 609 |
| 1984.25 | 0 | 35126 | 5694 | 354 |
| 1984.5 | 31359 | 23856 | 3343 | 202 |
| 1984.75 | 0 | 13469 | 1476 | 116 |
| 1985 | 0 | 17265 | 6851 | 688 |
| 1985.25 | 0 | 12256 | 3265 | 385 |
| 1985.5 | 27522 | 8926 | 1980 | 229 |
| 1985.75 | 0 | 5504 | 900 | 133 |
| 1986 | 0 | 14724 | 2951 | 491 |
| 1986.25 | 0 | 10165 | 1456 | 277 |
| 1986.5 | 52240 | 7435 | 863 | 166 |
| 1986.75 | 0 | 4743 | 414 | 98 |
| 1987 | 0 | 31724 | 2626 | 254 |
| 1987.25 | 0 | 23887 | 1427 | 145 |
| 1987.5 | 11154 | 18052 | 915 | 91 |
| 1987.75 | 0 | 12538 | 508 | 57 |
| 1988 | 0 | 5510 | 7357 | 258 |
| 1988.25 | 0 | 4434 | 4464 | 144 |
| 1988.5 | 56933 | 3606 | 3128 | 86 |
| 1988.75 | 0 | 2805 | 2042 | 53 |
| 1989 | 0 | 32107 | 1894 | 1212 |
| 1989.25 | 0 | 22788 | 1235 | 743 |
| 1989.5 | 48422 | 16148 | 795 | 458 |
| 1989.75 | 0 | 10511 | 436 | 284 |
| 1990 | 0 | 25599 | 6231 | 396 |
| 1990.25 | 0 | 20035 | 3987 | 249 |
| 1990.5 | 70952 | 15015 | 2542 | 156 |
| 1990.75 | 0 | 10993 | 1649 | 100 |
| 1991 | 0 | 39006 | 7653 | 1155 |
| 1991.25 | 0 | 27831 | 4273 | 713 |
| 1991.5 | 126386 | 20584 | 2512 | 446 |
| 1991.75 | 0 | 14496 | 1420 | 282 |
| 1992 | 0 | 70962 | 10007 | 959 |
| 1992.25 | 0 | 49540 | 6051 | 587 |
| 1992.5 | 67755 | 35018 | 3985 | 365 |
| 1992.75 | 0 | 22938 | 2437 | 231 |
| 1993 | 0 | 36127 | 14384 | 1672 |
| 1993.25 | 0 | 23913 | 7533 | 999 |
| 1993.5 | 59535 | 15835 | 4124 | 598 |
| 1993.75 | 0 | 9744 | 1930 | 357 |
| 1994 | 0 | 31390 | 5825 | 1046 |
| 1994.25 | 0 | 21774 | 3622 | 635 |
| 1994.5 | 168365 | 15671 | 2350 | 390 |
| 1994.75 | 0 | 10656 | 1355 | 237 |
| 1995 | 0 | 96561 | 7124 | 971 |
| 1995.25 | 0 | 69163 | 4371 | 625 |
| 1995.5 | 83109 | 48863 | 2695 | 400 |
| 1995.75 | 0 | 33287 | 1751 | 260 |
| 1996 | 0 | 43139 | 21559 | 1386 |
| 1996.25 | 0 | 33345 | 13330 | 886 |
| 1996.5 | 162388 | 25258 | 8630 | 564 |
| 1996.75 | 0 | 18463 | 5080 | 353 |
| 1997 | 0 | 93850 | 13828 | 3290 |
| 1997.25 | 0 | 67654 | 9467 | 2215 |
| 1997.5 | 43987 | 53017 | 6578 | 1479 |
| 1997.75 | 0 | 39082 | 4299 | 968 |
| 1998 | 0 | 22784 | 28675 | 3620 |
| 1998.25 | 0 | 16475 | 18298 | 2321 |
| 1998.5 | 77866 | 11662 | 11863 | 1481 |
| 1998.75 | 0 | 8788 | 7361 | 956 |
| 1999 | 0 | 44670 | 6407 | 5345 |
| 1999.25 | 0 | 34610 | 4831 | 3512 |
| 1999.5 | 195092 | 26847 | 3483 | 2284 |
| 1999.75 | 0 | 20772 | 2246 | 1482 |
| 2000 | 0 | 117458 | 16334 | 2412 |
| 2000.25 | 0 | 89118 | 10439 | 1599 |
| 2000.5 | 49168 | 70523 | 6576 | 1050 |
| 2000.75 | 0 | 53468 | 4558 | 685 |
| 2001 | 0 | 26454 | 37963 | 3593 |
| 2001.25 | 0 | 19253 | 24435 | 2310 |
| 2001.5 | 47964 | 13938 | 16166 | 1471 |
| 2001.75 | 0 | 9860 | 11370 | 947 |
| 2002 | 0 | 27055 | 6883 | 8480 |
| 2002.25 | 0 | 19308 | 4149 | 5523 |
| 2002.5 | 31993 | 12926 | 2649 | 3645 |
| 2002.75 | 0 | 8912 | 1802 | 2399 |
| 2003 | 0 | 16934 | 5978 | 2762 |
| 2003.25 | 0 | 12235 | 3694 | 1762 |
| 2003.5 | 14291 | 8752 | 2258 | 1116 |
| 2003.75 | 0 | 5909 | 1417 | 702 |
| 2004 | 0 | 7692 | 4274 | 1222 |
| 2004.25 | 0 | 5854 | 2826 | 788 |
| 2004.5 | 13235 | 4779 | 1858 | 505 |
| 2004.75 | 0 | 3347 | 1165 | 321 |
| 2005 | 0 | 7384 | 2326 | 884 |
| 2005.25 | 0 | 5478 | 1629 | 591 |
| 2005.5 | 29357 | 4129 | 1136 | 390 |
| 2005.75 | 0 | 3243 | 739 | 254 |
| 2006 | 0 | 17829 | 2674 | 612 |
| 2006.25 | 0 | 15137 | 2091 | 403 |
| 2006.5 | 26366 | 13200 | 1593 | 261 |
| 2006.75 | 0 | 10182 | 1019 | 168 |
| 2007 | 0 | 15138 | 7190 | 736 |
| 2007.25 | 0 | 11950 | 4894 | 479 |
| 2007.5 | 42873 | 9269 | 3350 | 316 |
| 2007.75 | 0 | 7358 | 2215 | 207 |
| 2008 | 0 | 24169 | 6138 | 1644 |
| 2008.25 | 0 | 17591 | 4540 | 996 |
| 2008.5 | 53696 | 12765 | 3291 | 609 |
| 2008.75 | 0 | 9566 | 2293 | 385 |
| 2009 | 0 | 32995 | 6613 | 1891 |
| 2009.25 | 0 | 23208 | 4177 | 1216 |
| 2009.5 | 87129 | 17049 | 2571 | 778 |
| 2009.75 | 0 | 14030 | 1584 | 493 |
| 2010 | 0 | 52104 | 11879 | 1332 |
| 2010.25 | 0 | 42184 | 10508 | 867 |
| 2010.5 | 8132 | 31842 | 8260 | 557 |
| 2010.75 | 0 | 23340 | 5440 | 354 |
| 2011 | 0 | 4894 | 16714 | 3683 |
| 2011.25 | 0 | 3837 | 11018 | 2300 |
| 2011.5 | 16724 | 3168 | 7868 | 1455 |
| 2011.75 | 0 | 2501 | 5150 | 919 |
| 2012 | 0 | 9763 | 2019 | 4059 |
| 2012.25 | 0 | 7429 | 1542 | 2720 |
| 2012.5 | 83694 | 5812 | 1215 | 1827 |
| 2012.75 | 0 | 4734 | 886 | 1230 |
| 2013 | 0 | 50465 | 3536 | 1426 |
| 2013.25 | 0 | 39349 | 2718 | 942 |
| 2013.5 | 24063 | 28369 | 2029 | 619 |
| 2013.75 | 0 | 18743 | 1343 | 403 |
| 2014 | 0 | 13147 | 11607 | 1057 |
| 2014.25 | 0 | 9216 | 6754 | 657 |
| 2014.5 | 104080 | 6508 | 3922 | 407 |
| 2014.75 | 0 | 4854 | 2365 | 251 |
| 2015 | 0 | 62356 | 3373 | 1572 |
| 2015.25 | 0 | 48239 | 2212 | 995 |
| 2015.5 | 41126 | 36539 | 1454 | 629 |
| 2015.75 | 0 | 22667 | 857 | 398 |
| 2016 | 0 | 23214 | 13993 | 760 |
| 2016.25 | 0 | 16509 | 8520 | 480 |
| 2016.5 | 77519 | 11229 | 5094 | 299 |
| 2016.75 | 0 | 7146 | 3217 | 185 |
| 2017 | 0 | 43216 | 4439 | 2091 |
| 2017.25 | 0 | 29316 | 2903 | 1331 |
| 2017.5 | 23742 | 19960 | 1928 | 844 |
| 2017.75 | 0 | 12864 | 1154 | 528 |
| 2018 | 0 | 12220 | 8190 | 968 |
| 2018.25 | 0 | 8841 | 5034 | 605 |
| 2018.5 | 69806 | 6255 | 3076 | 374 |
| 2018.75 | 0 | 4299 | 1893 | 229 |
| 2019 | 0 | 37255 | 2834 | 1185 |
| 2019.25 | 0 | 26921 | 1915 | 750 |
| 2019.5 | 114106 | 19078 | 1148 | 462 |
| 2019.75 | 0 | 14709 | 723 | 287 |
| 2020 | 0 | 63471 | 10678 | 652 |
| 2020.25 | 0 | 47604 | 7526 | 429 |
| 2020.5 | 69937 | 36385 | 5120 | 276 |
| 2020.75 | 0 | 25775 | 3111 | 177 |
| 2021 | 0 | 38056 | 17231 | 1992 |
| 2021.25 | 0 | 27255 | 11057 | 1298 |
| 2021.5 | 31076 | 19126 | 6868 | 834 |
| 2021.75 | 0 | 13154 | 4400 | 537 |
| 2022 | 0 | 16382 | 8741 | 3048 |
| 2022.25 | 0 | 12002 | 5258 | 1929 |
| 2022.5 | 66591 | 8456 | 3255 | 1215 |
| 2022.75 | 0 | 6441 | 1996 | 764 |
| 2023 | 0 | 33426 | 4680 | 1567 |
| 2023.25 | 0 | 25405 | 3010 | 1021 |
| 2023.5 | 11429 | 17697 | 1930 | 668 |
| 2023.75 | 0 | 11152 | 1214 | 435 |
| 2024 | 0 | 5518 | 7040 | 1124 |
| 2024.25 | 0 | 3367 | 4081 | 730 |
| 2024.5 | 10514 | 2322 | 2397 | 472 |
| 2024.75 | 0 | 1624 | 1523 | 304 |
| 2025 | 0 | 5909 | 1163 | 1150 |
| 2025.25 | 0 | 4358 | 801 | 747 |
| 2025.5 | 5096 | 3286 | 523 | 481 |
| 2025.75 | 0 | 2447 | 351 | 309 |