| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 39495 | 9288 | 324 |
| 1984.25 | 0 | 26722 | 4676 | 172 |
| 1984.5 | 36288 | 18688 | 2622 | 96 |
| 1984.75 | 0 | 10690 | 1007 | 54 |
| 1985 | 0 | 18769 | 4835 | 315 |
| 1985.25 | 0 | 12558 | 2354 | 164 |
| 1985.5 | 24321 | 8897 | 1368 | 94 |
| 1985.75 | 0 | 5184 | 546 | 53 |
| 1986 | 0 | 12624 | 2400 | 192 |
| 1986.25 | 0 | 8528 | 1202 | 102 |
| 1986.5 | 49653 | 6107 | 720 | 60 |
| 1986.75 | 0 | 3758 | 322 | 35 |
| 1987 | 0 | 26152 | 1902 | 131 |
| 1987.25 | 0 | 17909 | 991 | 72 |
| 1987.5 | 11791 | 12897 | 602 | 42 |
| 1987.75 | 0 | 8255 | 293 | 25 |
| 1988 | 0 | 6221 | 4229 | 118 |
| 1988.25 | 0 | 4339 | 2328 | 66 |
| 1988.5 | 41585 | 3136 | 1430 | 40 |
| 1988.75 | 0 | 2072 | 744 | 24 |
| 1989 | 0 | 22269 | 1166 | 321 |
| 1989.25 | 0 | 15709 | 664 | 185 |
| 1989.5 | 44826 | 11233 | 396 | 108 |
| 1989.75 | 0 | 7331 | 201 | 65 |
| 1990 | 0 | 24076 | 4215 | 126 |
| 1990.25 | 0 | 16877 | 2354 | 72 |
| 1990.5 | 59431 | 11943 | 1364 | 41 |
| 1990.75 | 0 | 7882 | 708 | 25 |
| 1991 | 0 | 32135 | 4731 | 341 |
| 1991.25 | 0 | 22461 | 2619 | 193 |
| 1991.5 | 82999 | 15986 | 1541 | 112 |
| 1991.75 | 0 | 10551 | 800 | 67 |
| 1992 | 0 | 45037 | 6484 | 426 |
| 1992.25 | 0 | 31604 | 3635 | 243 |
| 1992.5 | 44114 | 22608 | 2172 | 142 |
| 1992.75 | 0 | 14877 | 1122 | 86 |
| 1993 | 0 | 23953 | 9190 | 597 |
| 1993.25 | 0 | 16903 | 5237 | 345 |
| 1993.5 | 37045 | 12112 | 3144 | 202 |
| 1993.75 | 0 | 7891 | 1589 | 121 |
| 1994 | 0 | 20112 | 4879 | 847 |
| 1994.25 | 0 | 14255 | 2818 | 493 |
| 1994.5 | 110552 | 10267 | 1716 | 292 |
| 1994.75 | 0 | 6773 | 891 | 176 |
| 1995 | 0 | 60398 | 4351 | 574 |
| 1995.25 | 0 | 43408 | 2615 | 342 |
| 1995.5 | 43692 | 31440 | 1617 | 206 |
| 1995.75 | 0 | 21319 | 889 | 126 |
| 1996 | 0 | 23953 | 14025 | 560 |
| 1996.25 | 0 | 17385 | 8680 | 341 |
| 1996.5 | 90747 | 12697 | 5494 | 208 |
| 1996.75 | 0 | 8589 | 3007 | 127 |
| 1997 | 0 | 49886 | 5738 | 1750 |
| 1997.25 | 0 | 36418 | 3612 | 1076 |
| 1997.5 | 22357 | 26753 | 2321 | 666 |
| 1997.75 | 0 | 18216 | 1287 | 408 |
| 1998 | 0 | 12285 | 12141 | 970 |
| 1998.25 | 0 | 8993 | 7705 | 600 |
| 1998.5 | 38457 | 6593 | 4928 | 369 |
| 1998.75 | 0 | 4560 | 2824 | 228 |
| 1999 | 0 | 21150 | 3048 | 1714 |
| 1999.25 | 0 | 15535 | 1953 | 1066 |
| 1999.5 | 81618 | 11384 | 1247 | 656 |
| 1999.75 | 0 | 7879 | 716 | 406 |
| 2000 | 0 | 44815 | 5203 | 647 |
| 2000.25 | 0 | 32944 | 3341 | 402 |
| 2000.5 | 21362 | 24217 | 2151 | 249 |
| 2000.75 | 0 | 17029 | 1277 | 155 |
| 2001 | 0 | 11702 | 11101 | 778 |
| 2001.25 | 0 | 8588 | 7102 | 483 |
| 2001.5 | 21156 | 6322 | 4597 | 301 |
| 2001.75 | 0 | 4518 | 2826 | 189 |
| 2002 | 0 | 11619 | 2981 | 1654 |
| 2002.25 | 0 | 8542 | 1915 | 1030 |
| 2002.5 | 14935 | 6308 | 1250 | 645 |
| 2002.75 | 0 | 4435 | 743 | 402 |
| 2003 | 0 | 8181 | 2896 | 651 |
| 2003.25 | 0 | 6037 | 1884 | 409 |
| 2003.5 | 7288 | 4469 | 1240 | 258 |
| 2003.75 | 0 | 3153 | 742 | 161 |
| 2004 | 0 | 4008 | 2108 | 515 |
| 2004.25 | 0 | 2965 | 1381 | 325 |
| 2004.5 | 7217 | 2203 | 916 | 206 |
| 2004.75 | 0 | 1566 | 558 | 129 |
| 2005 | 0 | 3972 | 1051 | 394 |
| 2005.25 | 0 | 2972 | 712 | 254 |
| 2005.5 | 24847 | 2223 | 482 | 163 |
| 2005.75 | 0 | 1663 | 326 | 105 |
| 2006 | 0 | 13910 | 1245 | 288 |
| 2006.25 | 0 | 10343 | 823 | 184 |
| 2006.5 | 18921 | 7661 | 530 | 115 |
| 2006.75 | 0 | 5560 | 315 | 72 |
| 2007 | 0 | 10390 | 3408 | 199 |
| 2007.25 | 0 | 7764 | 2300 | 128 |
| 2007.5 | 29027 | 5780 | 1522 | 82 |
| 2007.75 | 0 | 4275 | 976 | 52 |
| 2008 | 0 | 16238 | 3167 | 684 |
| 2008.25 | 0 | 12141 | 2140 | 440 |
| 2008.5 | 46199 | 9035 | 1413 | 280 |
| 2008.75 | 0 | 6647 | 884 | 178 |
| 2009 | 0 | 25844 | 4896 | 699 |
| 2009.25 | 0 | 19328 | 3311 | 450 |
| 2009.5 | 71430 | 14371 | 2176 | 286 |
| 2009.75 | 0 | 10456 | 1291 | 180 |
| 2010 | 0 | 39952 | 7702 | 968 |
| 2010.25 | 0 | 29897 | 5212 | 624 |
| 2010.5 | 9689 | 22143 | 3365 | 393 |
| 2010.75 | 0 | 16038 | 1956 | 246 |