| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 | 
| 1984 | 0 | 43815 | 10129 | 423 | 
| 1984.25 | 0 | 30125 | 5388 | 238 | 
| 1984.5 | 41144 | 20772 | 2945 | 136 | 
| 1984.75 | 30684 | 11465 | 1095 | 78 | 
| 1985 | 0 | 21606 | 5353 | 393 | 
| 1985.25 | 0 | 14331 | 2568 | 209 | 
| 1985.5 | 26675 | 10183 | 1518 | 125 | 
| 1985.75 | 19892 | 5677 | 576 | 72 | 
| 1986 | 0 | 14015 | 2667 | 228 | 
| 1986.25 | 0 | 9491 | 1358 | 125 | 
| 1986.5 | 58289 | 6856 | 838 | 77 | 
| 1986.75 | 43539 | 4256 | 393 | 46 | 
| 1987 | 0 | 31325 | 2343 | 191 | 
| 1987.25 | 0 | 21537 | 1245 | 107 | 
| 1987.5 | 12747 | 15667 | 782 | 66 | 
| 1987.75 | 9521 | 10261 | 407 | 40 | 
| 1988 | 0 | 6766 | 5158 | 170 | 
| 1988.25 | 0 | 4791 | 2981 | 100 | 
| 1988.5 | 45207 | 3511 | 1910 | 62 | 
| 1988.75 | 33796 | 2411 | 1092 | 39 | 
| 1989 | 0 | 24531 | 1425 | 529 | 
| 1989.25 | 0 | 17610 | 858 | 319 | 
| 1989.5 | 48951 | 12610 | 518 | 192 | 
| 1989.75 | 36569 | 8213 | 267 | 117 | 
| 1990 | 0 | 26491 | 4783 | 195 | 
| 1990.25 | 0 | 18651 | 2721 | 114 | 
| 1990.5 | 66575 | 12977 | 1522 | 66 | 
| 1990.75 | 49757 | 8745 | 838 | 41 | 
| 1991 | 0 | 36392 | 5483 | 452 | 
| 1991.25 | 0 | 25423 | 3050 | 261 | 
| 1991.5 | 93517 | 18110 | 1814 | 156 | 
| 1991.75 | 69898 | 12221 | 1002 | 96 | 
| 1992 | 0 | 51297 | 7866 | 592 | 
| 1992.25 | 0 | 36115 | 4479 | 347 | 
| 1992.5 | 48558 | 25977 | 2735 | 211 | 
| 1992.75 | 36287 | 17389 | 1489 | 130 | 
| 1993 | 0 | 26581 | 11034 | 854 | 
| 1993.25 | 0 | 18817 | 6379 | 505 | 
| 1993.5 | 43150 | 13496 | 3865 | 305 | 
| 1993.75 | 32227 | 8744 | 1972 | 186 | 
| 1994 | 0 | 23502 | 5370 | 1086 | 
| 1994.25 | 0 | 16569 | 3071 | 637 | 
| 1994.5 | 122323 | 11953 | 1890 | 389 | 
| 1994.75 | 91425 | 7940 | 1013 | 239 | 
| 1995 | 0 | 67341 | 5250 | 714 | 
| 1995.25 | 0 | 48615 | 3208 | 435 | 
| 1995.5 | 51114 | 35210 | 1993 | 267 | 
| 1995.75 | 38205 | 24699 | 1189 | 167 | 
| 1996 | 0 | 28228 | 16797 | 796 | 
| 1996.25 | 0 | 20631 | 10635 | 494 | 
| 1996.5 | 103012 | 15154 | 6862 | 310 | 
| 1996.75 | 77032 | 10393 | 3914 | 193 | 
| 1997 | 0 | 57072 | 7183 | 2453 | 
| 1997.25 | 0 | 41936 | 4615 | 1535 | 
| 1997.5 | 26311 | 31053 | 3036 | 973 | 
| 1997.75 | 19667 | 21315 | 1734 | 605 | 
| 1998 | 0 | 14541 | 14545 | 1397 | 
| 1998.25 | 0 | 10686 | 9355 | 875 | 
| 1998.5 | 47477 | 7859 | 6053 | 549 | 
| 1998.75 | 35507 | 5532 | 3634 | 345 | 
| 1999 | 0 | 26288 | 3808 | 2369 | 
| 1999.25 | 0 | 19411 | 2482 | 1494 | 
| 1999.5 | 94835 | 14219 | 1589 | 932 | 
| 1999.75 | 70934 | 9825 | 919 | 581 | 
| 2000 | 0 | 52390 | 6621 | 897 | 
| 2000.25 | 0 | 38673 | 4308 | 565 | 
| 2000.5 | 23818 | 28491 | 2797 | 355 | 
| 2000.75 | 17808 | 20269 | 1714 | 224 | 
| 2001 | 0 | 13095 | 13280 | 1078 | 
| 2001.25 | 0 | 9608 | 8507 | 674 | 
| 2001.5 | 26614 | 7080 | 5537 | 424 | 
| 2001.75 | 19914 | 5181 | 3588 | 271 | 
| 2002 | 0 | 14714 | 3507 | 2238 | 
| 2002.25 | 0 | 10811 | 2254 | 1400 | 
| 2002.5 | 19946 | 7992 | 1479 | 886 | 
| 2002.75 | 14905 | 5607 | 883 | 556 | 
| 2003 | 0 | 10948 | 3649 | 831 | 
| 2003.25 | 0 | 8111 | 2406 | 528 | 
| 2003.5 | 9649 | 6017 | 1594 | 336 | 
| 2003.75 | 7214 | 4283 | 979 | 212 | 
| 2004 | 0 | 5346 | 2977 | 724 | 
| 2004.25 | 0 | 3975 | 1980 | 462 | 
| 2004.5 | 9616 | 2964 | 1329 | 296 | 
| 2004.75 | 7192 | 2148 | 845 | 188 | 
| 2005 | 0 | 5331 | 1494 | 629 | 
| 2005.25 | 0 | 3988 | 1012 | 405 | 
| 2005.5 | 33690 | 2984 | 685 | 261 | 
| 2005.75 | 25205 | 2232 | 464 | 168 | 
| 2006 | 0 | 18856 | 1670 | 422 | 
| 2006.25 | 0 | 14048 | 1110 | 270 | 
| 2006.5 | 23229 | 10427 | 727 | 171 | 
| 2006.75 | 17381 | 7619 | 450 | 108 | 
| 2007 | 0 | 12919 | 4959 | 305 | 
| 2007.25 | 0 | 9653 | 3343 | 197 | 
| 2007.5 | 36597 | 7196 | 2235 | 126 | 
| 2007.75 | 27377 | 5354 | 1484 | 81 | 
| 2008 | 0 | 20478 | 3989 | 1047 | 
| 2008.25 | 0 | 15312 | 2696 | 674 | 
| 2008.5 | 67193 | 11409 | 1801 | 432 | 
| 2008.75 | 50306 | 8426 | 1165 | 276 | 
| 2009 | 0 | 37645 | 6206 | 942 | 
| 2009.25 | 0 | 28163 | 4197 | 606 | 
| 2009.5 | 82784 | 20998 | 2806 | 389 | 
| 2009.75 | 61955 | 15193 | 1686 | 245 | 
| 2010 | 0 | 46350 | 11202 | 1264 | 
| 2010.25 | 0 | 34685 | 7586 | 814 | 
| 2010.5 | 9245 | 25752 | 5009 | 520 | 
| 2010.75 | 6916 | 18751 | 3086 | 329 | 
| 2011 | 0 | 5170 | 13660 | 2190 | 
| 2011.25 | 0 | 3868 | 9243 | 1411 | 
| 2011.5 | 17516 | 2891 | 6238 | 907 | 
| 2011.75 | 13105 | 2144 | 4091 | 581 | 
| 2012 | 0 | 9799 | 1571 | 3028 | 
| 2012.25 | 0 | 7331 | 1064 | 1950 | 
| 2012.5 | 82407 | 5478 | 717 | 1254 | 
| 2012.75 | 61669 | 4079 | 477 | 805 | 
| 2013 | 0 | 46035 | 2790 | 784 | 
| 2013.25 | 0 | 34448 | 1889 | 505 | 
| 2013.5 | 32187 | 25625 | 1255 | 323 | 
| 2013.75 | 24079 | 18788 | 791 | 206 | 
| 2014 | 0 | 17952 | 12427 | 547 | 
| 2014.25 | 0 | 13426 | 8402 | 352 |