| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 44355 | 10904 | 563 |
| 1984.25 | 0 | 30548 | 5886 | 326 |
| 1984.5 | 42474 | 21127 | 3279 | 190 |
| 1984.75 | 0 | 11738 | 1287 | 111 |
| 1985 | 0 | 22365 | 5623 | 526 |
| 1985.25 | 0 | 14900 | 2770 | 291 |
| 1985.5 | 29035 | 10610 | 1658 | 176 |
| 1985.75 | 0 | 5981 | 668 | 103 |
| 1986 | 0 | 15318 | 2908 | 307 |
| 1986.25 | 0 | 10445 | 1527 | 175 |
| 1986.5 | 60985 | 7565 | 953 | 108 |
| 1986.75 | 0 | 4769 | 472 | 66 |
| 1987 | 0 | 32899 | 2717 | 257 |
| 1987.25 | 0 | 22817 | 1493 | 150 |
| 1987.5 | 14505 | 16644 | 949 | 93 |
| 1987.75 | 0 | 11072 | 518 | 58 |
| 1988 | 0 | 7774 | 5997 | 256 |
| 1988.25 | 0 | 5538 | 3548 | 154 |
| 1988.5 | 50747 | 4068 | 2293 | 97 |
| 1988.75 | 0 | 2819 | 1348 | 61 |
| 1989 | 0 | 27627 | 1712 | 713 |
| 1989.25 | 0 | 19926 | 1049 | 438 |
| 1989.5 | 56047 | 14354 | 646 | 269 |
| 1989.75 | 0 | 9548 | 353 | 167 |
| 1990 | 0 | 30505 | 5811 | 283 |
| 1990.25 | 0 | 21668 | 3411 | 170 |
| 1990.5 | 70957 | 15267 | 1989 | 102 |
| 1990.75 | 0 | 10473 | 1148 | 64 |
| 1991 | 0 | 38952 | 6787 | 672 |
| 1991.25 | 0 | 27467 | 3906 | 400 |
| 1991.5 | 102920 | 19708 | 2382 | 245 |
| 1991.75 | 0 | 13497 | 1370 | 153 |
| 1992 | 0 | 56596 | 8862 | 865 |
| 1992.25 | 0 | 40045 | 5151 | 518 |
| 1992.5 | 52040 | 28910 | 3192 | 319 |
| 1992.75 | 0 | 19559 | 1798 | 199 |
| 1993 | 0 | 28556 | 12651 | 1113 |
| 1993.25 | 0 | 20317 | 7465 | 671 |
| 1993.5 | 47442 | 14634 | 4598 | 413 |
| 1993.75 | 0 | 9670 | 2480 | 255 |
| 1994 | 0 | 25962 | 6148 | 1488 |
| 1994.25 | 0 | 18426 | 3605 | 894 |
| 1994.5 | 134523 | 13344 | 2251 | 553 |
| 1994.75 | 0 | 8995 | 1259 | 344 |
| 1995 | 0 | 74196 | 6043 | 950 |
| 1995.25 | 0 | 53761 | 3746 | 587 |
| 1995.5 | 57548 | 39075 | 2359 | 365 |
| 1995.75 | 0 | 27595 | 1437 | 230 |
| 1996 | 0 | 31837 | 18977 | 1009 |
| 1996.25 | 0 | 23321 | 12123 | 632 |
| 1996.5 | 108257 | 17161 | 7876 | 399 |
| 1996.75 | 0 | 11876 | 4622 | 250 |
| 1997 | 0 | 60008 | 8264 | 2976 |
| 1997.25 | 0 | 44153 | 5341 | 1875 |
| 1997.5 | 29047 | 32717 | 3525 | 1192 |
| 1997.75 | 0 | 22616 | 2064 | 748 |
| 1998 | 0 | 16066 | 15528 | 1712 |
| 1998.25 | 0 | 11822 | 10042 | 1079 |
| 1998.5 | 54118 | 8704 | 6532 | 681 |
| 1998.75 | 0 | 6150 | 3980 | 430 |
| 1999 | 0 | 29976 | 4252 | 2677 |
| 1999.25 | 0 | 22158 | 2783 | 1697 |
| 1999.5 | 100143 | 16262 | 1795 | 1067 |
| 1999.75 | 0 | 11323 | 1065 | 671 |
| 2000 | 0 | 55359 | 7705 | 1057 |
| 2000.25 | 0 | 40905 | 5037 | 669 |
| 2000.5 | 25955 | 30170 | 3287 | 423 |
| 2000.75 | 0 | 21548 | 2044 | 268 |
| 2001 | 0 | 14288 | 14243 | 1327 |
| 2001.25 | 0 | 10497 | 9176 | 835 |
| 2001.5 | 28936 | 7743 | 5998 | 528 |
| 2001.75 | 0 | 5669 | 3904 | 338 |
| 2002 | 0 | 15997 | 3848 | 2510 |
| 2002.25 | 0 | 11768 | 2487 | 1581 |
| 2002.5 | 21331 | 8706 | 1637 | 1004 |
| 2002.75 | 0 | 6135 | 994 | 634 |
| 2003 | 0 | 11725 | 4024 | 961 |
| 2003.25 | 0 | 8691 | 2659 | 612 |
| 2003.5 | 10057 | 6450 | 1766 | 390 |
| 2003.75 | 0 | 4605 | 1098 | 248 |
| 2004 | 0 | 5575 | 3208 | 829 |
| 2004.25 | 0 | 4146 | 2136 | 529 |
| 2004.5 | 10678 | 3092 | 1434 | 340 |
| 2004.75 | 0 | 2242 | 917 | 216 |
| 2005 | 0 | 5920 | 1561 | 698 |
| 2005.25 | 0 | 4429 | 1056 | 449 |
| 2005.5 | 35389 | 3314 | 715 | 289 |
| 2005.75 | 0 | 2479 | 484 | 186 |
| 2006 | 0 | 19810 | 1855 | 448 |
| 2006.25 | 0 | 14762 | 1235 | 287 |
| 2006.5 | 24874 | 10963 | 811 | 182 |
| 2006.75 | 0 | 8025 | 508 | 116 |
| 2007 | 0 | 13843 | 5304 | 354 |
| 2007.25 | 0 | 10343 | 3576 | 228 |
| 2007.5 | 41403 | 7713 | 2394 | 146 |
| 2007.75 | 0 | 5740 | 1591 | 94 |
| 2008 | 0 | 23175 | 4277 | 1128 |
| 2008.25 | 0 | 17329 | 2892 | 726 |
| 2008.5 | 73351 | 12917 | 1934 | 466 |
| 2008.75 | 0 | 9552 | 1257 | 298 |
| 2009 | 0 | 41073 | 7045 | 1019 |
| 2009.25 | 0 | 30728 | 4766 | 656 |
| 2009.5 | 88340 | 22918 | 3190 | 421 |
| 2009.75 | 0 | 16651 | 1949 | 267 |
| 2010 | 0 | 49451 | 12293 | 1455 |
| 2010.25 | 0 | 37004 | 8325 | 937 |
| 2010.5 | 10169 | 27496 | 5512 | 599 |
| 2010.75 | 0 | 20069 | 3430 | 380 |
| 2011 | 0 | 5689 | 14652 | 2457 |
| 2011.25 | 0 | 4256 | 9914 | 1582 |
| 2011.5 | 19234 | 3181 | 6692 | 1018 |
| 2011.75 | 0 | 2360 | 4400 | 652 |
| 2012 | 0 | 10762 | 1732 | 3284 |
| 2012.25 | 0 | 8052 | 1172 | 2115 |
| 2012.5 | 90196 | 6017 | 791 | 1360 |
| 2012.75 | 0 | 4482 | 527 | 874 |
| 2013 | 0 | 50393 | 3093 | 863 |
| 2013.25 | 0 | 37710 | 2094 | 556 |
| 2013.5 | 35624 | 28070 | 1394 | 356 |
| 2013.75 | 0 | 20624 | 886 | 227 |
| 2014 | 0 | 19880 | 13808 | 625 |
| 2014.25 | 0 | 14869 | 9337 | 402 |