| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 2016 | 809 | 688 | 474 | 360 | 250 | 143 | 77 | 36 | 23 | 46 |
| 2017 | 793 | 713 | 567 | 395 | 258 | 152 | 79 | 46 | 19 | 43 |
| 2018 | 754 | 707 | 623 | 454 | 283 | 162 | 84 | 47 | 24 | 39 |
| 2019 | 709 | 658 | 616 | 506 | 311 | 164 | 85 | 46 | 23 | 38 |
| 2020 | 693 | 585 | 572 | 502 | 322 | 159 | 73 | 42 | 20 | 35 |
| 2021 | 688 | 588 | 494 | 469 | 323 | 161 | 66 | 35 | 18 | 32 |
| 2022 | 705 | 574 | 511 | 393 | 300 | 162 | 73 | 33 | 16 | 30 |
| 2023 | 718 | 613 | 482 | 413 | 243 | 154 | 76 | 38 | 16 | 29 |
| 2024 | 727 | 615 | 519 | 383 | 258 | 120 | 78 | 42 | 20 | 30 |