| Table 3. Estimated stock numbers at age. | |||||||||
| Year Age | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 
| 2000 | 2257 | 1082 | 163 | 85 | 5 | 1 | 0 | 0 | 0 | 
| 2001 | 1740 | 1513 | 745 | 85 | 23 | 2 | 0 | 0 | 0 | 
| 2002 | 2452 | 1166 | 1038 | 367 | 22 | 9 | 1 | 0 | 0 | 
| 2003 | 2182 | 1644 | 797 | 474 | 75 | 8 | 4 | 1 | 0 | 
| 2004 | 2601 | 1462 | 1122 | 375 | 70 | 22 | 4 | 3 | 0 | 
| 2005 | 5182 | 1743 | 996 | 450 | 41 | 19 | 10 | 2 | 0 | 
| 2006 | 5419 | 3474 | 1186 | 333 | 63 | 11 | 9 | 5 | 0 | 
| 2007 | 4867 | 3633 | 2372 | 356 | 60 | 22 | 5 | 5 | 1 | 
| 2008 | 4614 | 3262 | 2491 | 981 | 77 | 20 | 11 | 3 | 1 | 
| 2009 | 5063 | 3093 | 2250 | 1196 | 279 | 23 | 9 | 6 | 0 | 
| 2010 | 8796 | 3394 | 2144 | 1289 | 441 | 98 | 11 | 5 | 1 | 
| 2011 | 16381 | 5896 | 2363 | 1329 | 548 | 123 | 44 | 6 | 1 | 
| 2012 | 21600 | 10982 | 4117 | 1479 | 574 | 170 | 52 | 21 | 2 | 
| 2013 | 22667 | 14480 | 7683 | 2670 | 726 | 209 | 74 | 25 | 6 | 
| 2014 | 16055 | 15196 | 10149 | 5016 | 1416 | 289 | 84 | 31 | 8 | 
| 2015 | 12548 | 10761 | 10664 | 6745 | 2578 | 578 | 110 | 28 | 8 | 
| 2016 | 14187 | 8410 | 7556 | 7022 | 3391 | 978 | 203 | 40 | 9 | 
| 2017 | 7754 | 9512 | 5907 | 4862 | 3009 | 1263 | 276 | 70 | 14 | 
| 2018 | 10474 | 5197 | 6686 | 3748 | 1828 | 915 | 321 | 70 | 21 | 
| 2019 | 8290 | 7022 | 3651 | 4220 | 1389 | 469 | 223 | 69 | 19 | 
| 2020 | 7567 | 5557 | 4935 | 2308 | 1700 | 323 | 117 | 52 | 21 | 
| 2021 | 9820 | 5072 | 3905 | 3152 | 852 | 459 | 66 | 31 | 17 | 
| 2022 | 9450 | 6583 | 3565 | 2459 | 1107 | 188 | 108 | 16 | 13 |