Table 2. Estimated stock numbers. | ||||||
Year\Age | 1 | 2 | 3 | 4 | 5 | 6+ |
1971 | 33996 | 36316 | 15935 | 4447 | 2060 | 620 |
1972 | 9200 | 20717 | 17016 | 5656 | 1876 | 1307 |
1973 | 19934 | 5260 | 6998 | 6444 | 3647 | 1851 |
1974 | 22675 | 21608 | 15183 | 7009 | 2397 | 707 |
1975 | 22971 | 18869 | 7116 | 5802 | 1188 | 883 |
1976 | 12925 | 20827 | 15565 | 3111 | 1768 | 894 |
1977 | 18514 | 9520 | 13898 | 7910 | 793 | 987 |
1978 | 17417 | 23861 | 5217 | 3885 | 1675 | 464 |
1979 | 9716 | 14669 | 13382 | 1825 | 1904 | 532 |
1980 | 16855 | 6237 | 11998 | 5753 | 614 | 917 |
1981 | 14343 | 14703 | 5176 | 5982 | 2078 | 474 |
1982 | 17346 | 11760 | 6240 | 2947 | 948 | 810 |
1983 | 13616 | 16699 | 8248 | 1856 | 313 | 426 |
1984 | 8890 | 13361 | 8150 | 2659 | 431 | 200 |
1985 | 6075 | 8795 | 9603 | 3154 | 565 | 143 |
1986 | 16376 | 4960 | 4481 | 2035 | 521 | 201 |
1987 | 4057 | 17464 | 3875 | 1205 | 511 | 177 |
1988 | 7555 | 3104 | 4469 | 982 | 250 | 92 |
1989 | 3166 | 6924 | 2669 | 1822 | 266 | 126 |
1990 | 10670 | 2624 | 2546 | 722 | 492 | 78 |
1991 | 4469 | 10700 | 1338 | 541 | 146 | 116 |
1992 | 7595 | 4992 | 5722 | 263 | 90 | 36 |
1993 | 4549 | 7693 | 2307 | 2089 | 55 | 33 |
1994 | 7358 | 4186 | 5783 | 1242 | 576 | 24 |
1995 | 12200 | 6163 | 3686 | 2286 | 496 | 260 |
1996 | 3747 | 10223 | 3779 | 1231 | 485 | 152 |
1997 | 8194 | 3180 | 9941 | 1534 | 416 | 182 |
1998 | 8577 | 9614 | 2259 | 2748 | 409 | 111 |
1999 | 8833 | 6908 | 5730 | 625 | 581 | 110 |
2000 | 3796 | 5350 | 3450 | 1386 | 170 | 142 |
2001 | 1752 | 2593 | 2688 | 918 | 251 | 61 |
2002 | 4113 | 1653 | 1064 | 571 | 125 | 60 |
2003 | 984 | 3298 | 1009 | 327 | 118 | 29 |
2004 | 4011 | 781 | 1500 | 362 | 113 | 70 |
2005 | 1528 | 3400 | 343 | 488 | 64 | 36 |
2006 | 2246 | 1170 | 1696 | 127 | 132 | 40 |
2007 | 925 | 920 | 502 | 554 | 53 | 91 |
2008 | 573 | 401 | 357 | 166 | 146 | 33 |
2009 | 1628 | 295 | 171 | 161 | 66 | 30 |
2010 | 937 | 1168 | 168 | 92 | 52 | 24 |
2011 | 1201 | 635 | 719 | 105 | 26 | 24 |
2012 | 1636 | 872 | 365 | 490 | 80 | 24 |