| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 40451 | 6705 | 241 |
| 1984.25 | 0 | 27554 | 3775 | 126 |
| 1984.5 | 22918 | 18825 | 2143 | 64 |
| 1984.75 | 0 | 10407 | 808 | 34 |
| 1985 | 0 | 12498 | 4814 | 254 |
| 1985.25 | 0 | 8996 | 2078 | 121 |
| 1985.5 | 20685 | 6708 | 1225 | 67 |
| 1985.75 | 0 | 4075 | 464 | 36 |
| 1986 | 0 | 10923 | 1979 | 170 |
| 1986.25 | 0 | 7438 | 889 | 83 |
| 1986.5 | 36378 | 5499 | 512 | 47 |
| 1986.75 | 0 | 3384 | 206 | 26 |
| 1987 | 0 | 22477 | 1653 | 84 |
| 1987.25 | 0 | 16879 | 821 | 42 |
| 1987.5 | 7021 | 12866 | 518 | 25 |
| 1987.75 | 0 | 8720 | 254 | 15 |
| 1988 | 0 | 3294 | 4477 | 81 |
| 1988.25 | 0 | 2779 | 2468 | 40 |
| 1988.5 | 39667 | 2390 | 1682 | 23 |
| 1988.75 | 0 | 1920 | 999 | 13 |
| 1989 | 0 | 22398 | 1259 | 455 |
| 1989.25 | 0 | 15674 | 801 | 267 |
| 1989.5 | 31575 | 10937 | 499 | 157 |
| 1989.75 | 0 | 6745 | 239 | 94 |
| 1990 | 0 | 16213 | 3546 | 150 |
| 1990.25 | 0 | 13145 | 2134 | 87 |
| 1990.5 | 49375 | 10052 | 1254 | 50 |
| 1990.75 | 0 | 7402 | 731 | 31 |
| 1991 | 0 | 26953 | 5040 | 426 |
| 1991.25 | 0 | 18905 | 2607 | 244 |
| 1991.5 | 94603 | 13901 | 1430 | 144 |
| 1991.75 | 0 | 9481 | 712 | 88 |
| 1992 | 0 | 53139 | 6200 | 379 |
| 1992.25 | 0 | 37100 | 3466 | 212 |
| 1992.5 | 49616 | 26537 | 2150 | 124 |
| 1992.75 | 0 | 17113 | 1137 | 75 |
| 1993 | 0 | 26053 | 10337 | 620 |
| 1993.25 | 0 | 16757 | 5104 | 350 |
| 1993.5 | 40710 | 10802 | 2663 | 198 |
| 1993.75 | 0 | 6178 | 1024 | 111 |
| 1994 | 0 | 20898 | 3250 | 395 |
| 1994.25 | 0 | 14155 | 1911 | 219 |
| 1994.5 | 113669 | 10125 | 1194 | 126 |
| 1994.75 | 0 | 6590 | 587 | 72 |
| 1995 | 0 | 65467 | 4147 | 344 |
| 1995.25 | 0 | 45835 | 2335 | 211 |
| 1995.5 | 51577 | 31646 | 1311 | 128 |
| 1995.75 | 0 | 20694 | 759 | 80 |
| 1996 | 0 | 25974 | 12546 | 506 |
| 1996.25 | 0 | 20189 | 7418 | 315 |
| 1996.5 | 109185 | 15252 | 4664 | 195 |
| 1996.75 | 0 | 10794 | 2442 | 118 |
| 1997 | 0 | 63764 | 7852 | 1410 |
| 1997.25 | 0 | 44228 | 5107 | 933 |
| 1997.5 | 28529 | 34354 | 3391 | 615 |
| 1997.75 | 0 | 24323 | 1961 | 390 |
| 1998 | 0 | 14434 | 17062 | 1446 |
| 1998.25 | 0 | 10366 | 10034 | 905 |
| 1998.5 | 51070 | 7235 | 6012 | 564 |
| 1998.75 | 0 | 5146 | 3401 | 357 |
| 1999 | 0 | 29574 | 3469 | 2190 |
| 1999.25 | 0 | 23055 | 2559 | 1416 |
| 1999.5 | 129884 | 18025 | 1765 | 897 |
| 1999.75 | 0 | 13464 | 1053 | 567 |
| 2000 | 0 | 79636 | 10247 | 974 |
| 2000.25 | 0 | 59228 | 5881 | 638 |
| 2000.5 | 32938 | 46640 | 3306 | 412 |
| 2000.75 | 0 | 33640 | 2122 | 264 |
| 2001 | 0 | 17547 | 21985 | 1442 |
| 2001.25 | 0 | 12753 | 12811 | 907 |
| 2001.5 | 32799 | 9233 | 7706 | 564 |
| 2001.75 | 0 | 6283 | 5127 | 359 |
| 2002 | 0 | 18619 | 4159 | 3378 |
| 2002.25 | 0 | 13242 | 2291 | 2143 |
| 2002.5 | 21858 | 8695 | 1359 | 1391 |
| 2002.75 | 0 | 5705 | 877 | 894 |
| 2003 | 0 | 11353 | 3573 | 1088 |
| 2003.25 | 0 | 8121 | 2062 | 695 |
| 2003.5 | 9285 | 5741 | 1173 | 441 |
| 2003.75 | 0 | 3614 | 700 | 275 |
| 2004 | 0 | 4915 | 2475 | 532 |
| 2004.25 | 0 | 3702 | 1542 | 341 |
| 2004.5 | 8605 | 3055 | 955 | 218 |
| 2004.75 | 0 | 1992 | 576 | 137 |
| 2005 | 0 | 4793 | 1269 | 397 |
| 2005.25 | 0 | 3475 | 849 | 268 |
| 2005.5 | 18572 | 2564 | 565 | 179 |
| 2005.75 | 0 | 1883 | 362 | 117 |
| 2006 | 0 | 11422 | 1462 | 290 |
| 2006.25 | 0 | 9747 | 1098 | 189 |
| 2006.5 | 16854 | 8573 | 795 | 121 |
| 2006.75 | 0 | 6220 | 473 | 76 |
| 2007 | 0 | 9626 | 3882 | 290 |
| 2007.25 | 0 | 7567 | 2444 | 188 |
| 2007.5 | 29841 | 5797 | 1544 | 124 |
| 2007.75 | 0 | 4319 | 946 | 81 |
| 2008 | 0 | 16921 | 3438 | 651 |
| 2008.25 | 0 | 12045 | 2372 | 381 |
| 2008.5 | 35549 | 8548 | 1588 | 225 |
| 2008.75 | 0 | 6121 | 1031 | 139 |
| 2009 | 0 | 22376 | 3952 | 771 |
| 2009.25 | 0 | 15023 | 2300 | 493 |
| 2009.5 | 57169 | 10644 | 1292 | 312 |
| 2009.75 | 0 | 8098 | 711 | 191 |
| 2010 | 0 | 34435 | 6416 | 554 |
| 2010.25 | 0 | 28145 | 5610 | 361 |
| 2010.5 | 5185 | 20914 | 4177 | 228 |
| 2010.75 | 0 | 14279 | 2522 | 142 |
| 2011 | 0 | 3184 | 9443 | 1566 |
| 2011.25 | 0 | 2461 | 5721 | 959 |
| 2011.5 | 11066 | 2030 | 3832 | 597 |
| 2011.75 | 0 | 1503 | 2359 | 370 |
| 2012 | 0 | 6534 | 1142 | 1715 |
| 2012.25 | 0 | 4874 | 825 | 1129 |
| 2012.5 | 57694 | 3762 | 620 | 744 |
| 2012.75 | 0 | 2943 | 448 | 493 |
| 2013 | 0 | 35404 | 2006 | 583 |
| 2013.25 | 0 | 27623 | 1475 | 385 |
| 2013.5 | 16571 | 19451 | 1039 | 251 |
| 2013.75 | 0 | 12022 | 642 | 161 |
| 2014 | 0 | 9050 | 6594 | 410 |
| 2014.25 | 0 | 6205 | 3574 | 251 |
| 2014.5 | 71038 | 4294 | 1921 | 152 |
| 2014.75 | 0 | 3048 | 1051 | 91 |
| 2015 | 0 | 42961 | 1937 | 602 |
| 2015.25 | 0 | 32875 | 1198 | 379 |
| 2015.5 | 28796 | 24464 | 738 | 236 |
| 2015.75 | 0 | 13807 | 383 | 145 |
| 2016 | 0 | 16389 | 7658 | 292 |
| 2016.25 | 0 | 11453 | 4428 | 183 |
| 2016.5 | 55204 | 7559 | 2465 | 111 |
| 2016.75 | 0 | 4431 | 1392 | 65 |
| 2017 | 0 | 30688 | 2480 | 781 |
| 2017.25 | 0 | 20122 | 1543 | 499 |
| 2017.5 | 16781 | 13270 | 970 | 315 |
| 2017.75 | 0 | 7919 | 528 | 193 |
| 2018 | 0 | 8461 | 4555 | 373 |
| 2018.25 | 0 | 6012 | 2670 | 231 |
| 2018.5 | 48489 | 4147 | 1526 | 138 |
| 2018.75 | 0 | 2672 | 868 | 82 |
| 2019 | 0 | 25378 | 1584 | 452 |
| 2019.25 | 0 | 18112 | 1043 | 283 |
| 2019.5 | 76996 | 12557 | 570 | 165 |
| 2019.75 | 0 | 9092 | 316 | 98 |
| 2020 | 0 | 42299 | 5972 | 239 |
| 2020.25 | 0 | 31490 | 4053 | 158 |
| 2020.5 | 49758 | 23962 | 2589 | 100 |
| 2020.75 | 0 | 15878 | 1413 | 62 |
| 2021 | 0 | 26925 | 9515 | 769 |
| 2021.25 | 0 | 18878 | 5806 | 501 |
| 2021.5 | 22047 | 12893 | 3347 | 316 |
| 2021.75 | 0 | 8351 | 1983 | 200 |
| 2022 | 0 | 11466 | 5068 | 1180 |
| 2022.25 | 0 | 8196 | 2843 | 751 |
| 2022.5 | 47313 | 5565 | 1643 | 470 |
| 2022.75 | 0 | 3982 | 948 | 292 |
| 2023 | 0 | 22699 | 2635 | 646 |
| 2023.25 | 0 | 17382 | 1577 | 418 |
| 2023.5 | 8554 | 11860 | 936 | 270 |
| 2023.75 | 0 | 6907 | 540 | 173 |
| 2024 | 0 | 3984 | 4038 | 463 |
| 2024.25 | 0 | 2297 | 2166 | 301 |
| 2024.5 | 7772 | 1553 | 1179 | 195 |
| 2024.75 | 0 | 1027 | 720 | 125 |
| 2025 | 0 | 4391 | 702 | 512 |
| 2025.25 | 0 | 3224 | 480 | 333 |
| 2025.5 | 3767 | 2438 | 307 | 214 |
| 2025.75 | 0 | 1813 | 204 | 137 |