| Table 2. Estimated stock numbers. | ||||
| Time\Age | 0 | 1 | 2 | 3 |
| 1984 | 0 | 40206 | 5173 | 212 |
| 1984.25 | 0 | 28548 | 3700 | 146 |
| 1984.5 | 40775 | 17383 | 2012 | 10 |
| 1984.75 | 27862 | 10314 | 730 | 0 |
| 1985 | 0 | 15568 | 3645 | 195 |
| 1985.25 | 0 | 11393 | 1750 | 37 |
| 1985.5 | 33292 | 6806 | 983 | 18 |
| 1985.75 | 21875 | 4296 | 277 | 0 |
| 1986 | 0 | 11952 | 1546 | 100 |
| 1986.25 | 0 | 8121 | 734 | 15 |
| 1986.5 | 56698 | 4848 | 384 | 6 |
| 1986.75 | 39177 | 3076 | 77 | 0 |
| 1987 | 0 | 23667 | 1214 | 23 |
| 1987.25 | 0 | 16923 | 690 | 1 |
| 1987.5 | 13658 | 10447 | 450 | 1 |
| 1987.75 | 7374 | 6918 | 250 | 2 |
| 1988 | 0 | 3504 | 2787 | 33 |
| 1988.25 | 0 | 2635 | 1424 | 0 |
| 1988.5 | 57392 | 1771 | 853 | 0 |
| 1988.75 | 36985 | 1399 | 491 | 0 |
| 1989 | 0 | 21475 | 729 | 74 |
| 1989.25 | 0 | 14047 | 592 | 35 |
| 1989.5 | 47431 | 8416 | 357 | 17 |
| 1989.75 | 29232 | 5133 | 157 | 11 |
| 1990 | 0 | 16219 | 2256 | 55 |
| 1990.25 | 0 | 11907 | 1376 | 33 |
| 1990.5 | 58519 | 7472 | 567 | 13 |
| 1990.75 | 36920 | 5385 | 314 | 6 |
| 1991 | 0 | 22550 | 3181 | 200 |
| 1991.25 | 0 | 14632 | 1671 | 68 |
| 1991.5 | 100152 | 8860 | 808 | 40 |
| 1991.75 | 68295 | 5967 | 441 | 20 |
| 1992 | 0 | 44577 | 3491 | 143 |
| 1992.25 | 0 | 29674 | 1839 | 29 |
| 1992.5 | 70007 | 18732 | 1001 | 4 |
| 1992.75 | 38969 | 12078 | 526 | 2 |
| 1993 | 0 | 23458 | 6382 | 162 |
| 1993.25 | 0 | 15036 | 4094 | 103 |
| 1993.5 | 55826 | 8359 | 2175 | 27 |
| 1993.75 | 32730 | 4922 | 828 | 2 |
| 1994 | 0 | 18751 | 2262 | 123 |
| 1994.25 | 0 | 11719 | 1342 | 78 |
| 1994.5 | 136007 | 6486 | 689 | 41 |
| 1994.75 | 93463 | 3959 | 202 | 0 |
| 1995 | 0 | 61133 | 2009 | 64 |
| 1995.25 | 0 | 42466 | 1267 | 46 |
| 1995.5 | 79220 | 24441 | 553 | 8 |
| 1995.75 | 44728 | 15811 | 353 | 4 |
| 1996 | 0 | 23719 | 7805 | 171 |
| 1996.25 | 0 | 17245 | 5204 | 105 |
| 1996.5 | 106696 | 9648 | 2862 | 34 |
| 1996.75 | 75165 | 6401 | 1386 | 1 |
| 1997 | 0 | 49591 | 4074 | 495 |
| 1997.25 | 0 | 34300 | 3027 | 435 |
| 1997.5 | 36323 | 22482 | 1884 | 227 |
| 1997.75 | 22767 | 15263 | 1115 | 95 |
| 1998 | 0 | 12273 | 8881 | 442 |
| 1998.25 | 0 | 8351 | 5873 | 145 |
| 1998.5 | 69172 | 4445 | 3194 | 35 |
| 1998.75 | 45530 | 3180 | 2063 | 34 |
| 1999 | 0 | 26275 | 1888 | 710 |
| 1999.25 | 0 | 18585 | 1463 | 316 |
| 1999.5 | 163909 | 10301 | 803 | 100 |
| 1999.75 | 112099 | 7114 | 453 | 59 |
| 2000 | 0 | 70084 | 4642 | 160 |
| 2000.25 | 0 | 49739 | 3140 | 115 |
| 2000.5 | 51863 | 32596 | 1698 | 37 |
| 2000.75 | 32283 | 23453 | 1103 | 24 |
| 2001 | 0 | 17827 | 13284 | 567 |
| 2001.25 | 0 | 12253 | 8804 | 372 |
| 2001.5 | 56846 | 6665 | 4575 | 117 |
| 2001.75 | 35159 | 4285 | 3266 | 26 |
| 2002 | 0 | 18837 | 2310 | 598 |
| 2002.25 | 0 | 12532 | 1413 | 143 |
| 2002.5 | 42672 | 5972 | 727 | 93 |
| 2002.75 | 23830 | 3668 | 418 | 62 |
| 2003 | 0 | 11694 | 1889 | 235 |
| 2003.25 | 0 | 7913 | 1213 | 109 |
| 2003.5 | 17745 | 4291 | 629 | 28 |
| 2003.75 | 10205 | 2645 | 354 | 36 |
| 2004 | 0 | 5524 | 1599 | 109 |
| 2004.25 | 0 | 4114 | 1168 | 68 |
| 2004.5 | 16394 | 2541 | 634 | 31 |
| 2004.75 | 9990 | 1616 | 385 | 11 |
| 2005 | 0 | 5281 | 853 | 90 |
| 2005.25 | 0 | 3711 | 636 | 73 |
| 2005.5 | 37593 | 1819 | 324 | 44 |
| 2005.75 | 23865 | 1332 | 239 | 33 |
| 2006 | 0 | 14368 | 902 | 160 |
| 2006.25 | 0 | 11784 | 729 | 183 |
| 2006.5 | 37158 | 7108 | 412 | 48 |
| 2006.75 | 21337 | 4902 | 241 | 30 |
| 2007 | 0 | 11251 | 2211 | 64 |
| 2007.25 | 0 | 8451 | 1657 | 33 |
| 2007.5 | 71350 | 4205 | 840 | 38 |
| 2007.75 | 38423 | 3213 | 597 | 28 |
| 2008 | 0 | 19360 | 2233 | 245 |
| 2008.25 | 0 | 13495 | 1791 | 86 |
| 2008.5 | 63721 | 5962 | 869 | 45 |
| 2008.75 | 40277 | 4324 | 590 | 15 |
| 2009 | 0 | 23178 | 2529 | 224 |
| 2009.25 | 0 | 15342 | 1934 | 186 |
| 2009.5 | 90199 | 6916 | 936 | 57 |
| 2009.75 | 53984 | 5151 | 239 | 86 |
| 2010 | 0 | 31798 | 3836 | 154 |
| 2010.25 | 0 | 25422 | 3864 | 148 |
| 2010.5 | 11561 | 14678 | 2216 | 94 |
| 2010.75 | 7095 | 9988 | 1109 | 59 |
| 2011 | 0 | 4050 | 5733 | 390 |
| 2011.25 | 0 | 3177 | 4443 | 224 |
| 2011.5 | 28268 | 1632 | 2159 | 125 |
| 2011.75 | 15655 | 1149 | 1318 | 32 |
| 2012 | 0 | 7979 | 725 | 517 |
| 2012.25 | 0 | 6067 | 614 | 480 |
| 2012.5 | 130805 | 2586 | 290 | 204 |
| 2012.75 | 74210 | 2002 | 210 | 224 |
| 2013 | 0 | 40384 | 1131 | 164 |
| 2013.25 | 0 | 30416 | 965 | 113 |
| 2013.5 | 28735 | 13920 | 494 | 74 |
| 2013.75 | 17010 | 8439 | 251 | 152 |
| 2014 | 0 | 8971 | 3672 | 105 |
| 2014.25 | 0 | 6424 | 2590 | 59 |
| 2014.5 | 125925 | 2483 | 933 | 16 |
| 2014.75 | 79767 | 1796 | 469 | 2 |
| 2015 | 0 | 45955 | 979 | 136 |
| 2015.25 | 0 | 35324 | 769 | 63 |
| 2015.5 | 49261 | 19199 | 411 | 30 |
| 2015.75 | 29996 | 10445 | 189 | 71 |
| 2016 | 0 | 16974 | 4833 | 101 |
| 2016.25 | 0 | 11950 | 3313 | 55 |
| 2016.5 | 105141 | 5194 | 1365 | 11 |
| 2016.75 | 61779 | 3033 | 562 | 1 |
| 2017 | 0 | 33155 | 1424 | 111 |
| 2017.25 | 0 | 21683 | 1062 | 97 |
| 2017.5 | 36841 | 10315 | 550 | 87 |
| 2017.75 | 18873 | 5977 | 273 | 105 |
| 2018 | 0 | 8539 | 2704 | 117 |
| 2018.25 | 0 | 6344 | 1980 | 73 |
| 2018.5 | 88552 | 2886 | 868 | 31 |
| 2018.75 | 50509 | 1791 | 487 | 2 |
| 2019 | 0 | 27605 | 915 | 121 |
| 2019.25 | 0 | 19738 | 762 | 63 |
| 2019.5 | 110525 | 10118 | 315 | 12 |
| 2019.75 | 72678 | 6522 | 151 | 1 |
| 2020 | 0 | 43918 | 3429 | 56 |
| 2020.25 | 0 | 30732 | 2568 | 48 |
| 2020.5 | 85436 | 17452 | 1370 | 15 |
| 2020.75 | 52079 | 10915 | 706 | 15 |
| 2021 | 0 | 29332 | 5236 | 185 |
| 2021.25 | 0 | 19601 | 3702 | 91 |
| 2021.5 | 44117 | 9937 | 1793 | 25 |
| 2021.75 | 25691 | 6363 | 1020 | 25 |
| 2022 | 0 | 13949 | 3325 | 292 |
| 2022.25 | 0 | 9361 | 2267 | 207 |
| 2022.5 | 116994 | 3847 | 978 | 93 |
| 2022.75 | 60026 | 2554 | 542 | 61 |
| 2023 | 0 | 29680 | 1435 | 126 |
| 2023.25 | 0 | 21160 | 1017 | 67 |
| 2023.5 | 22773 | 9046 | 442 | 46 |
| 2023.75 | 11225 | 4813 | 232 | 23 |
| 2024 | 0 | 5376 | 2463 | 106 |
| 2024.25 | 0 | 3222 | 1561 | 45 |
| 2024.5 | 23345 | 1283 | 618 | 12 |
| 2024.75 | 13513 | 834 | 370 | 11 |
| 2025 | 0 | 7518 | 543 | 139 |
| 2025.25 | 0 | 5226 | 430 | 95 |
| 2025.5 | 64365 | 2165 | 208 | 44 |
| 2025.75 | 35718 | 1341 | 133 | 29 |