| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2009 | 100829879 | 36283504 | 7267656 | 12113642 | 6592855 | 4319820 | 4289365 | 2530764 | 1162694 | 685994 |
| 2010 | 84295594 | 87117608 | 26292263 | 4822280 | 7578191 | 3535455 | 2374779 | 2253346 | 1097797 | 857487 |
| 2011 | 34666359 | 67102781 | 58837148 | 17816954 | 3193819 | 4933509 | 1976890 | 1486737 | 1076030 | 869299 |
| 2012 | 28118328 | 29103246 | 48256052 | 37625880 | 11579535 | 2763260 | 3809605 | 1348233 | 880657 | 1132155 |
| 2013 | 27877159 | 22705941 | 20392835 | 30131106 | 22583245 | 6469495 | 2436091 | 2746696 | 968002 | 1671458 |
| 2014 | 37272227 | 21850456 | 19637798 | 19496884 | 21551190 | 13755608 | 3855585 | 1793205 | 1908229 | 2371713 |
| 2015 | 22556202 | 27979239 | 19410770 | 16914690 | 16082212 | 14407378 | 8193141 | 2358180 | 1000465 | 2206270 |
| 2016 | 14969195 | 17658888 | 22041777 | 16176475 | 14215671 | 12714989 | 10110748 | 5298054 | 1595371 | 1640123 |