| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 2009 | 99527942 | 33363367 | 7132256 | 12215870 | 6420463 | 4225367 | 4028164 | 2239434 | 1040595 | 597359 |
| 2010 | 84278558 | 84733446 | 24627525 | 4562160 | 7674486 | 3429866 | 2346441 | 2024500 | 832255 | 711506 |
| 2011 | 33723427 | 66445671 | 56446212 | 17036675 | 3049467 | 4965195 | 1830724 | 1344282 | 872935 | 698056 |
| 2012 | 28259774 | 28213551 | 48239668 | 36745076 | 10855533 | 2511544 | 3504576 | 1128013 | 753194 | 953975 |
| 2013 | 29617241 | 23482049 | 20062580 | 30389756 | 22499519 | 6097117 | 2109336 | 2201512 | 756617 | 1387847 |
| 2014 | 37422509 | 22826850 | 20087945 | 19235928 | 22165637 | 13768159 | 3491016 | 1427343 | 1355655 | 1807742 |
| 2015 | 23310702 | 28728826 | 19911184 | 16912903 | 15703993 | 14930467 | 7946006 | 1975669 | 684570 | 1433895 |
| 2016 | 14936853 | 18134950 | 22407592 | 16321950 | 13759923 | 12460714 | 10323454 | 4816109 | 1252053 | 1047637 |