Table 2. Estimated stock numbers. | ||||||
Year\Age | 1 | 2 | 3 | 4 | 5 | 6+ |
1968 | 4033 | 3402 | 1829 | 944 | 385 | 59 |
1969 | 4932 | 3114 | 1899 | 561 | 342 | 179 |
1970 | 6549 | 3027 | 673 | 425 | 247 | 157 |
1971 | 8185 | 4385 | 1696 | 295 | 154 | 126 |
1972 | 5706 | 7137 | 1601 | 513 | 122 | 116 |
1973 | 7172 | 2431 | 3402 | 849 | 256 | 115 |
1974 | 4215 | 7723 | 1086 | 977 | 302 | 141 |
1975 | 5832 | 1450 | 2724 | 559 | 405 | 185 |
1976 | 3775 | 6566 | 697 | 958 | 156 | 205 |
1977 | 4109 | 1165 | 2327 | 308 | 358 | 129 |
1978 | 4852 | 2430 | 585 | 598 | 94 | 156 |
1979 | 7522 | 2816 | 1139 | 239 | 246 | 105 |
1980 | 8719 | 5913 | 1345 | 454 | 89 | 116 |
1981 | 6232 | 7432 | 2659 | 450 | 181 | 79 |
1982 | 3770 | 4584 | 2647 | 1005 | 164 | 108 |
1983 | 4323 | 1887 | 1350 | 893 | 307 | 85 |
1984 | 5867 | 2393 | 773 | 425 | 290 | 129 |
1985 | 6313 | 4040 | 1204 | 275 | 145 | 137 |
1986 | 6544 | 4242 | 1197 | 348 | 98 | 100 |
1987 | 9805 | 3348 | 1401 | 419 | 117 | 66 |
1988 | 7098 | 8582 | 1140 | 429 | 122 | 58 |
1989 | 4224 | 3861 | 2939 | 367 | 126 | 54 |
1990 | 4180 | 1938 | 841 | 583 | 101 | 48 |
1991 | 4699 | 2505 | 664 | 193 | 158 | 37 |
1992 | 4870 | 2164 | 960 | 191 | 50 | 56 |
1993 | 2417 | 4881 | 564 | 171 | 31 | 21 |
1994 | 3525 | 970 | 1191 | 97 | 29 | 13 |
1995 | 3334 | 2200 | 252 | 233 | 16 | 9 |
1996 | 2943 | 1848 | 971 | 54 | 60 | 7 |
1997 | 3192 | 1919 | 673 | 289 | 16 | 20 |
1998 | 1593 | 3272 | 460 | 112 | 34 | 9 |
1999 | 729 | 1396 | 1157 | 92 | 22 | 9 |
2000 | 2077 | 306 | 149 | 75 | 11 | 4 |
2001 | 2146 | 1503 | 73 | 19 | 16 | 3 |
2002 | 2099 | 1041 | 585 | 10 | 4 | 4 |
2003 | 1098 | 2388 | 397 | 148 | 5 | 1 |
2004 | 1272 | 526 | 627 | 80 | 25 | 4 |
2005 | 943 | 1120 | 235 | 121 | 14 | 5 |
2006 | 856 | 535 | 325 | 44 | 16 | 6 |
2007 | 830 | 1050 | 221 | 45 | 4 | 3 |
2008 | 455 | 688 | 275 | 31 | 9 | 1 |
2009 | 868 | 251 | 232 | 61 | 9 | 2 |
2010 | 1316 | 867 | 78 | 40 | 13 | 3 |
2011 | 1049 | 1143 | 292 | 15 | 9 | 5 |
2012 | 1021 | 897 | 601 | 74 | 4 | 3 |
2013 | 1491 | 882 | 391 | 136 | 25 | 3 |
2014 | 1259 | 1441 | 395 | 98 | 29 | 7 |
2015 | 551 | 1397 | 589 | 93 | 27 | 10 |