| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1996 | 1605 | 1950 | 2267 | 2325 | 1852 | 1002 | 442 | 186 | 76 | 118 |
| 1997 | 1859 | 1367 | 1640 | 1824 | 1697 | 1172 | 591 | 240 | 94 | 108 |
| 1998 | 2792 | 1606 | 1176 | 1321 | 1376 | 1106 | 683 | 305 | 114 | 106 |
| 1999 | 2936 | 2387 | 1394 | 1000 | 983 | 867 | 605 | 313 | 125 | 101 |
| 2000 | 2896 | 2487 | 2035 | 1209 | 780 | 587 | 427 | 246 | 113 | 93 |
| 2001 | 2548 | 2496 | 2110 | 1679 | 974 | 522 | 314 | 192 | 108 | 99 |
| 2002 | 2530 | 2190 | 2129 | 1773 | 1308 | 661 | 312 | 156 | 90 | 110 |
| 2003 | 2745 | 2191 | 1875 | 1770 | 1388 | 870 | 402 | 180 | 85 | 121 |
| 2004 | 3078 | 2367 | 1892 | 1557 | 1301 | 857 | 479 | 210 | 97 | 118 |
| 2005 | 3914 | 2627 | 1983 | 1526 | 1106 | 724 | 422 | 226 | 98 | 113 |
| 2006 | 3735 | 3380 | 2198 | 1565 | 1084 | 626 | 362 | 195 | 102 | 103 |
| 2007 | 3616 | 3213 | 2820 | 1764 | 1114 | 625 | 315 | 167 | 81 | 93 |
| 2008 | 3922 | 3071 | 2675 | 2234 | 1253 | 652 | 336 | 156 | 80 | 89 |
| 2009 | 3922 | 3381 | 2576 | 2155 | 1602 | 801 | 386 | 181 | 77 | 91 |
| 2010 | 3217 | 3417 | 2853 | 2151 | 1631 | 1010 | 481 | 208 | 87 | 87 |
| 2011 | 2197 | 2794 | 2964 | 2365 | 1674 | 1072 | 583 | 244 | 96 | 84 |
| 2012 | 2580 | 1847 | 2407 | 2463 | 1820 | 1106 | 632 | 281 | 109 | 84 |
| 2013 | 4542 | 2160 | 1521 | 2019 | 1906 | 1148 | 608 | 272 | 109 | 82 |
| 2014 | 4579 | 4028 | 1823 | 1289 | 1592 | 1432 | 728 | 331 | 139 | 102 |
| 2015 | 4154 | 3922 | 3517 | 1501 | 963 | 991 | 790 | 252 | 129 | 101 |
| 2016 | 4350 | 3493 | 3337 | 2785 | 1151 | 624 | 566 | 335 | 111 | 106 |
| 2017 | 3655 | 3778 | 2887 | 2673 | 2061 | 799 | 383 | 299 | 183 | 120 |
| 2018 | 1965 | 3251 | 3240 | 2363 | 2057 | 1428 | 520 | 225 | 185 | 186 |
| 2019 | 1469 | 1671 | 2847 | 2723 | 1919 | 1393 | 973 | 321 | 147 | 233 |
| 2020 | 1388 | 1251 | 1443 | 2396 | 2156 | 1361 | 837 | 516 | 185 | 202 |
| 2021 | 1309 | 1190 | 1037 | 1251 | 1847 | 1378 | 784 | 358 | 249 | 160 |
| 2022 | 1958 | 1114 | 1029 | 857 | 978 | 1210 | 779 | 383 | 175 | 158 |
| 2023 | 2121 | 1712 | 973 | 861 | 662 | 688 | 721 | 384 | 210 | 137 |
| 2024 | 1644 | 1848 | 1512 | 806 | 652 | 432 | 426 | 374 | 213 | 148 |
| 2025 | 2095 | 1418 | 1599 | 1293 | 631 | 442 | 275 | 240 | 214 | 149 |