| Table 3. Estimated stock numbers at age. | ||||||||||
| Year Age | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 2016 | 949 | 649 | 494 | 378 | 278 | 165 | 92 | 40 | 24 | 52 |
| 2017 | 919 | 816 | 555 | 408 | 277 | 181 | 100 | 55 | 23 | 49 |
| 2018 | 807 | 790 | 699 | 461 | 304 | 186 | 111 | 59 | 30 | 46 |
| 2019 | 678 | 694 | 676 | 576 | 331 | 193 | 106 | 60 | 29 | 45 |
| 2020 | 699 | 583 | 593 | 548 | 372 | 176 | 86 | 48 | 24 | 40 |
| 2021 | 659 | 601 | 498 | 478 | 340 | 167 | 58 | 33 | 18 | 34 |
| 2022 | 705 | 566 | 513 | 403 | 306 | 172 | 76 | 31 | 18 | 33 |
| 2023 | 742 | 606 | 484 | 412 | 245 | 148 | 76 | 37 | 17 | 32 |
| 2024 | 780 | 637 | 518 | 389 | 260 | 133 | 84 | 47 | 25 | 35 |