| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 128452 | 13129 | 450 |
| 1984.25 | 0 | 74008 | 6370 | 323 |
| 1984.5 | 114938 | 42389 | 2921 | 9 |
| 1984.75 | 71077 | 20575 | 580 | 0 |
| 1985 | 0 | 43103 | 9325 | 318 |
| 1985.25 | 0 | 25808 | 3440 | 50 |
| 1985.5 | 102199 | 15527 | 1606 | 14 |
| 1985.75 | 62134 | 7799 | 281 | 0 |
| 1986 | 0 | 37151 | 3733 | 157 |
| 1986.25 | 0 | 21774 | 1411 | 17 |
| 1986.5 | 194278 | 13105 | 627 | 5 |
| 1986.75 | 125522 | 6867 | 137 | 0 |
| 1987 | 0 | 79559 | 3297 | 30 |
| 1987.25 | 0 | 48319 | 1420 | 0 |
| 1987.5 | 38788 | 29231 | 726 | 1 |
| 1987.75 | 22657 | 16646 | 281 | 5 |
| 1988 | 0 | 13005 | 8191 | 43 |
| 1988.25 | 0 | 8468 | 3406 | 0 |
| 1988.5 | 202915 | 5546 | 1673 | 0 |
| 1988.75 | 126141 | 3499 | 680 | 0 |
| 1989 | 0 | 77097 | 2219 | 106 |
| 1989.25 | 0 | 45082 | 1192 | 30 |
| 1989.5 | 177868 | 26229 | 601 | 16 |
| 1989.75 | 107491 | 14435 | 228 | 24 |
| 1990 | 0 | 63891 | 6673 | 117 |
| 1990.25 | 0 | 40837 | 3075 | 54 |
| 1990.5 | 267023 | 25420 | 1309 | 21 |
| 1990.75 | 162817 | 15507 | 533 | 14 |
| 1991 | 0 | 98514 | 9836 | 430 |
| 1991.25 | 0 | 58610 | 4350 | 101 |
| 1991.5 | 541269 | 35430 | 1947 | 76 |
| 1991.75 | 335540 | 20711 | 806 | 68 |
| 1992 | 0 | 206279 | 12003 | 398 |
| 1992.25 | 0 | 123880 | 5322 | 74 |
| 1992.5 | 262575 | 74998 | 2484 | 6 |
| 1992.75 | 158025 | 43682 | 1016 | 7 |
| 1993 | 0 | 94434 | 24666 | 271 |
| 1993.25 | 0 | 53799 | 11062 | 215 |
| 1993.5 | 219934 | 30400 | 5092 | 52 |
| 1993.75 | 131712 | 16545 | 1947 | 11 |
| 1994 | 0 | 78289 | 7896 | 302 |
| 1994.25 | 0 | 45811 | 3785 | 143 |
| 1994.5 | 681029 | 27198 | 1800 | 56 |
| 1994.75 | 425861 | 15414 | 652 | 0 |
| 1995 | 0 | 264484 | 8459 | 129 |
| 1995.25 | 0 | 158138 | 3615 | 118 |
| 1995.5 | 310535 | 93884 | 1470 | 20 |
| 1995.75 | 184303 | 54595 | 627 | 19 |
| 1996 | 0 | 108668 | 28909 | 362 |
| 1996.25 | 0 | 68207 | 13800 | 313 |
| 1996.5 | 668644 | 42224 | 6973 | 98 |
| 1996.75 | 419158 | 25489 | 3021 | 5 |
| 1997 | 0 | 261413 | 16409 | 1421 |
| 1997.25 | 0 | 156763 | 8318 | 1741 |
| 1997.5 | 155355 | 99060 | 4201 | 612 |
| 1997.75 | 91582 | 60381 | 1906 | 352 |
| 1998 | 0 | 53772 | 38077 | 1284 |
| 1998.25 | 0 | 31967 | 18199 | 462 |
| 1998.5 | 336475 | 18742 | 8859 | 77 |
| 1998.75 | 206451 | 11571 | 3983 | 116 |
| 1999 | 0 | 126425 | 7029 | 2028 |
| 1999.25 | 0 | 78706 | 4096 | 959 |
| 1999.5 | 927013 | 49219 | 2177 | 293 |
| 1999.75 | 581627 | 30797 | 1039 | 221 |
| 2000 | 0 | 364066 | 21676 | 299 |
| 2000.25 | 0 | 223400 | 9849 | 526 |
| 2000.5 | 220728 | 141382 | 4317 | 124 |
| 2000.75 | 130913 | 86932 | 2097 | 61 |
| 2001 | 0 | 77421 | 51513 | 1390 |
| 2001.25 | 0 | 46738 | 24633 | 1330 |
| 2001.5 | 211433 | 28221 | 12132 | 214 |
| 2001.75 | 127237 | 16689 | 5911 | 19 |
| 2002 | 0 | 76305 | 9444 | 1002 |
| 2002.25 | 0 | 44536 | 4010 | 179 |
| 2002.5 | 137875 | 25027 | 1820 | 236 |
| 2002.75 | 81781 | 14800 | 964 | 218 |
| 2003 | 0 | 48314 | 8348 | 986 |
| 2003.25 | 0 | 29163 | 3864 | 544 |
| 2003.5 | 64111 | 17541 | 1735 | 85 |
| 2003.75 | 38421 | 10230 | 893 | 317 |
| 2004 | 0 | 23226 | 6391 | 458 |
| 2004.25 | 0 | 14817 | 3453 | 319 |
| 2004.5 | 54398 | 9875 | 1839 | 95 |
| 2004.75 | 32995 | 5762 | 922 | 31 |
| 2005 | 0 | 19969 | 3134 | 699 |
| 2005.25 | 0 | 12139 | 1684 | 605 |
| 2005.5 | 149736 | 7446 | 896 | 234 |
| 2005.75 | 94625 | 4659 | 477 | 732 |
| 2006 | 0 | 59900 | 3245 | 919 |
| 2006.25 | 0 | 40291 | 2017 | 887 |
| 2006.5 | 113918 | 27302 | 1180 | 160 |
| 2006.75 | 70031 | 16713 | 548 | 19 |
| 2007 | 0 | 42832 | 9530 | 108 |
| 2007.25 | 0 | 27248 | 4814 | 21 |
| 2007.5 | 176800 | 17105 | 2495 | 124 |
| 2007.75 | 108418 | 10896 | 1252 | 338 |
| 2008 | 0 | 67054 | 7749 | 360 |
| 2008.25 | 0 | 40802 | 4345 | 52 |
| 2008.5 | 211831 | 24652 | 2372 | 43 |
| 2008.75 | 135538 | 15312 | 1122 | 2 |
| 2009 | 0 | 85916 | 9031 | 167 |
| 2009.25 | 0 | 49220 | 4403 | 322 |
| 2009.5 | 364749 | 28606 | 2077 | 144 |
| 2009.75 | 226928 | 18191 | 909 | 85 |
| 2010 | 0 | 141673 | 13284 | 173 |
| 2010.25 | 0 | 89735 | 9482 | 208 |
| 2010.5 | 37295 | 56252 | 5944 | 263 |
| 2010.75 | 23316 | 34531 | 3006 | 44 |
| 2011 | 0 | 14843 | 21137 | 926 |
| 2011.25 | 0 | 9399 | 10916 | 248 |
| 2011.5 | 79758 | 5961 | 5765 | 293 |
| 2011.75 | 49188 | 3715 | 2738 | 9 |
| 2012 | 0 | 30499 | 2552 | 974 |
| 2012.25 | 0 | 18754 | 1541 | 970 |
| 2012.5 | 365416 | 11483 | 898 | 562 |
| 2012.75 | 229985 | 7157 | 501 | 442 |
| 2013 | 0 | 144733 | 4291 | 309 |
| 2013.25 | 0 | 88650 | 2459 | 146 |
| 2013.5 | 92597 | 52838 | 1381 | 190 |
| 2013.75 | 56229 | 30078 | 665 | 640 |
| 2014 | 0 | 34082 | 15216 | 379 |
| 2014.25 | 0 | 19719 | 6497 | 114 |
| 2014.5 | 472681 | 11529 | 2785 | 38 |
| 2014.75 | 302090 | 7106 | 1246 | 1 |
| 2015 | 0 | 192231 | 4239 | 402 |
| 2015.25 | 0 | 120593 | 2146 | 112 |
| 2015.5 | 172063 | 75269 | 1089 | 64 |
| 2015.75 | 105157 | 40849 | 484 | 214 |
| 2016 | 0 | 64336 | 18614 | 359 |
| 2016.25 | 0 | 37518 | 8173 | 191 |
| 2016.5 | 313614 | 21423 | 3503 | 27 |
| 2016.75 | 192465 | 11883 | 1583 | 1 |
| 2017 | 0 | 117648 | 5746 | 126 |
| 2017.25 | 0 | 66596 | 2813 | 153 |
| 2017.5 | 96922 | 37924 | 1417 | 219 |
| 2017.75 | 56982 | 21321 | 649 | 314 |
| 2018 | 0 | 33590 | 10915 | 418 |
| 2018.25 | 0 | 20105 | 5100 | 181 |
| 2018.5 | 299904 | 11914 | 2390 | 77 |
| 2018.75 | 181501 | 6925 | 1179 | 1 |
| 2019 | 0 | 109336 | 3770 | 484 |
| 2019.25 | 0 | 66455 | 2038 | 239 |
| 2019.5 | 474173 | 40209 | 932 | 28 |
| 2019.75 | 290748 | 24178 | 407 | 1 |
| 2020 | 0 | 177480 | 14036 | 191 |
| 2020.25 | 0 | 108290 | 7490 | 225 |
| 2020.5 | 296608 | 67113 | 3822 | 47 |
| 2020.75 | 178176 | 39468 | 1651 | 105 |
| 2021 | 0 | 106994 | 21507 | 845 |
| 2021.25 | 0 | 63099 | 10440 | 355 |
| 2021.5 | 114718 | 36987 | 4839 | 79 |
| 2021.75 | 69058 | 21681 | 2270 | 241 |
| 2022 | 0 | 41471 | 12097 | 793 |
| 2022.25 | 0 | 24865 | 5686 | 352 |
| 2022.5 | 250297 | 14633 | 2860 | 260 |
| 2022.75 | 146601 | 8998 | 1397 | 641 |
| 2023 | 0 | 85603 | 5434 | 477 |
| 2023.25 | 0 | 54018 | 2620 | 68 |
| 2023.5 | 45874 | 32979 | 1295 | 123 |
| 2023.75 | 26484 | 18286 | 575 | 195 |
| 2024 | 0 | 15285 | 8697 | 338 |
| 2024.25 | 0 | 8569 | 3892 | 185 |
| 2024.5 | 58990 | 4985 | 1727 | 46 |
| 2024.75 | 36958 | 3029 | 863 | 181 |
| 2025 | 0 | 23042 | 1976 | 717 |
| 2025.25 | 0 | 14169 | 1170 | 439 |
| 2025.5 | 172410 | 8663 | 655 | 125 |
| 2025.75 | 105306 | 5280 | 334 | 59 |