| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 42098 | 9598 | 368 |
| 1984.25 | 0 | 28843 | 5078 | 204 |
| 1984.5 | 39112 | 19833 | 2765 | 114 |
| 1984.75 | 0 | 10903 | 1014 | 64 |
| 1985 | 0 | 20581 | 5029 | 343 |
| 1985.25 | 0 | 13640 | 2368 | 178 |
| 1985.5 | 25339 | 9670 | 1382 | 105 |
| 1985.75 | 0 | 5389 | 511 | 59 |
| 1986 | 0 | 13266 | 2491 | 189 |
| 1986.25 | 0 | 8949 | 1245 | 102 |
| 1986.5 | 53596 | 6455 | 760 | 61 |
| 1986.75 | 0 | 3974 | 347 | 36 |
| 1987 | 0 | 29021 | 2142 | 159 |
| 1987.25 | 0 | 20027 | 1112 | 87 |
| 1987.5 | 11494 | 14600 | 690 | 53 |
| 1987.75 | 0 | 9519 | 348 | 32 |
| 1988 | 0 | 6039 | 4687 | 133 |
| 1988.25 | 0 | 4298 | 2685 | 77 |
| 1988.5 | 42712 | 3173 | 1726 | 47 |
| 1988.75 | 0 | 2187 | 979 | 29 |
| 1989 | 0 | 23167 | 1285 | 455 |
| 1989.25 | 0 | 16574 | 775 | 272 |
| 1989.5 | 45758 | 11832 | 468 | 163 |
| 1989.75 | 0 | 7639 | 237 | 99 |
| 1990 | 0 | 24680 | 4375 | 166 |
| 1990.25 | 0 | 17369 | 2452 | 96 |
| 1990.5 | 60136 | 12051 | 1348 | 54 |
| 1990.75 | 0 | 8065 | 725 | 33 |
| 1991 | 0 | 32816 | 4992 | 375 |
| 1991.25 | 0 | 22936 | 2735 | 212 |
| 1991.5 | 89233 | 16405 | 1603 | 124 |
| 1991.75 | 0 | 11062 | 867 | 76 |
| 1992 | 0 | 48931 | 7097 | 493 |
| 1992.25 | 0 | 34329 | 4041 | 288 |
| 1992.5 | 47594 | 24603 | 2480 | 175 |
| 1992.75 | 0 | 16251 | 1339 | 107 |
| 1993 | 0 | 25935 | 10115 | 748 |
| 1993.25 | 0 | 18212 | 5741 | 440 |
| 1993.5 | 39906 | 12954 | 3425 | 265 |
| 1993.75 | 0 | 8252 | 1689 | 159 |
| 1994 | 0 | 21535 | 4941 | 882 |
| 1994.25 | 0 | 15001 | 2794 | 509 |
| 1994.5 | 119239 | 10725 | 1706 | 306 |
| 1994.75 | 0 | 7034 | 897 | 186 |
| 1995 | 0 | 65665 | 4570 | 605 |
| 1995.25 | 0 | 47297 | 2761 | 369 |
| 1995.5 | 46991 | 34138 | 1697 | 227 |
| 1995.75 | 0 | 23647 | 993 | 142 |
| 1996 | 0 | 25625 | 15772 | 654 |
| 1996.25 | 0 | 18681 | 9855 | 403 |
| 1996.5 | 100352 | 13653 | 6314 | 250 |
| 1996.75 | 0 | 9276 | 3532 | 154 |
| 1997 | 0 | 55627 | 6355 | 2166 |
| 1997.25 | 0 | 40792 | 4050 | 1349 |
| 1997.5 | 22315 | 30416 | 2646 | 851 |
| 1997.75 | 0 | 20765 | 1474 | 526 |
| 1998 | 0 | 12331 | 14083 | 1173 |
| 1998.25 | 0 | 9071 | 8974 | 726 |
| 1998.5 | 39066 | 6665 | 5764 | 450 |
| 1998.75 | 0 | 4699 | 3404 | 282 |
| 1999 | 0 | 21766 | 3228 | 2162 |
| 1999.25 | 0 | 16136 | 2106 | 1360 |
| 1999.5 | 88338 | 11862 | 1341 | 843 |
| 1999.75 | 0 | 8184 | 758 | 521 |
| 2000 | 0 | 49233 | 5495 | 749 |
| 2000.25 | 0 | 36548 | 3579 | 469 |
| 2000.5 | 22062 | 27182 | 2320 | 292 |
| 2000.75 | 0 | 19252 | 1408 | 184 |
| 2001 | 0 | 12027 | 12388 | 862 |
| 2001.25 | 0 | 8749 | 7835 | 536 |
| 2001.5 | 22770 | 6393 | 5045 | 336 |
| 2001.75 | 0 | 4642 | 3262 | 214 |
| 2002 | 0 | 12675 | 3099 | 1973 |
| 2002.25 | 0 | 9309 | 1967 | 1225 |
| 2002.5 | 16824 | 6838 | 1284 | 770 |
| 2002.75 | 0 | 4719 | 753 | 480 |
| 2003 | 0 | 9086 | 2999 | 695 |
| 2003.25 | 0 | 6624 | 1953 | 436 |
| 2003.5 | 7825 | 4833 | 1279 | 275 |
| 2003.75 | 0 | 3368 | 764 | 172 |
| 2004 | 0 | 4307 | 2297 | 548 |
| 2004.25 | 0 | 3177 | 1516 | 348 |
| 2004.5 | 7663 | 2368 | 1011 | 222 |
| 2004.75 | 0 | 1693 | 630 | 140 |
| 2005 | 0 | 4243 | 1152 | 454 |
| 2005.25 | 0 | 3168 | 780 | 294 |
| 2005.5 | 28235 | 2367 | 528 | 190 |
| 2005.75 | 0 | 1776 | 357 | 122 |
| 2006 | 0 | 15796 | 1337 | 320 |
| 2006.25 | 0 | 11731 | 892 | 205 |
| 2006.5 | 20258 | 8699 | 584 | 129 |
| 2006.75 | 0 | 6340 | 357 | 82 |
| 2007 | 0 | 11258 | 4026 | 235 |
| 2007.25 | 0 | 8408 | 2701 | 152 |
| 2007.5 | 30260 | 6255 | 1799 | 98 |
| 2007.75 | 0 | 4646 | 1188 | 63 |
| 2008 | 0 | 16916 | 3473 | 837 |
| 2008.25 | 0 | 12658 | 2357 | 539 |
| 2008.5 | 52737 | 9433 | 1577 | 345 |
| 2008.75 | 0 | 6967 | 1014 | 220 |
| 2009 | 0 | 30078 | 5089 | 802 |
| 2009.25 | 0 | 22600 | 3434 | 514 |
| 2009.5 | 69816 | 17002 | 2286 | 328 |
| 2009.75 | 0 | 12358 | 1356 | 206 |
| 2010 | 0 | 39401 | 9198 | 1014 |
| 2010.25 | 0 | 29682 | 6361 | 652 |
| 2010.5 | 6783 | 21994 | 4238 | 414 |
| 2010.75 | 0 | 15773 | 2602 | 262 |
| 2011 | 0 | 3796 | 11272 | 1826 |
| 2011.25 | 0 | 2835 | 7553 | 1175 |
| 2011.5 | 11513 | 2127 | 5089 | 755 |
| 2011.75 | 0 | 1575 | 3320 | 483 |
| 2012 | 0 | 6457 | 1149 | 2465 |
| 2012.25 | 0 | 4838 | 781 | 1596 |
| 2012.5 | 48870 | 3631 | 529 | 1031 |
| 2012.75 | 0 | 2715 | 352 | 663 |
| 2013 | 0 | 27230 | 1778 | 617 |
| 2013.25 | 0 | 20290 | 1212 | 397 |
| 2013.5 | 13407 | 14864 | 805 | 253 |
| 2013.75 | 0 | 10512 | 487 | 159 |
| 2014 | 0 | 7397 | 6206 | 332 |
| 2014.25 | 0 | 5476 | 4106 | 213 |
| 2014.5 | 79215 | 4029 | 2667 | 135 |
| 2014.75 | 0 | 2849 | 1534 | 84 |
| 2015 | 0 | 43652 | 1835 | 873 |
| 2015.25 | 0 | 32155 | 1224 | 559 |
| 2015.5 | 46043 | 23438 | 798 | 354 |
| 2015.75 | 0 | 16191 | 451 | 220 |
| 2016 | 0 | 25555 | 10686 | 394 |
| 2016.25 | 0 | 19112 | 7150 | 254 |
| 2016.5 | 94194 | 14090 | 4660 | 161 |
| 2016.75 | 0 | 10221 | 2884 | 102 |