

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 2 | 6 | 0 | 1 | 9 |
| 1970 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1971 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1974 | 0 | 1 | 2 | 0 | 1 | 4 |
| 1975 | 0 | 2 | 2 | 0 | 2 | 6 |
| 1976 | 0 | 3 | 2 | 0 | 1 | 6 |
| 1977 | 0 | 1 | 3 | 0 | 2 | 6 |
| 1978 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1979 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1980 | 0 | 0 | 3 | 0 | 1 | 4 |
| 1981 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1982 | 0 | 1 | 10 | 0 | 2 | 13 |
| 1983 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1984 | 0 | 2 | 7 | 0 | 0 | 9 |
| 1985 | 0 | 2 | 4 | 0 | 2 | 8 |
| 1986 | 0 | 4 | 5 | 0 | 0 | 9 |
| 1987 | 0 | 4 | 20 | 0 | 1 | 25 |
| 1988 | 0 | 1 | 21 | 0 | 2 | 24 |
| 1989 | 0 | 4 | 29 | 0 | 1 | 34 |
| 1990 | 1 | 21 | 10 | 0 | 0 | 32 |
| 1991 | 1 | 16 | 15 | 0 | 0 | 32 |
| 1992 | 1 | 156 | 18 | 0 | 0 | 175 |
| 1993 | 1 | 414 | 16 | 0 | 0 | 431 |
| 1994 | 2 | 1699 | 25 | 0 | 2 | 1728 |
| 1995 | 0 | 1926 | 21 | 0 | 2 | 1949 |
| 1996 | 1 | 1697 | 27 | 0 | 2 | 1727 |
| 1997 | 0 | 411 | 19 | 0 | 2 | 432 |
| 1998 | 0 | 608 | 9 | 0 | 1 | 618 |
| 1999 | 0 | 156 | 12 | 0 | 0 | 168 |
| 2000 | 4 | 1114 | 32 | 0 | 1 | 1151 |
| 2001 | 0 | 897 | 29 | 0 | 2 | 928 |
| 2002 | 0 | 1534 | 54 | 0 | 1 | 1589 |
| 2003 | 1 | 1084 | 30 | 0 | 1 | 1116 |
| 2004 | 2 | 1747 | 31 | 0 | 4 | 1784 |
| 2005 | 0 | 367 | 38 | 0 | 0 | 405 |
| 2006 | 0 | 866 | 49 | 1 | 4 | 920 |
| 2007 | 1 | 784 | 69 | 0 | 1 | 855 |
| 2008 | 0 | 464 | 75 | 0 | 0 | 539 |
| 2009 | 0 | 145 | 111 | 0 | 0 | 256 |
| 2010 | 0 | 516 | 157 | 0 | 0 | 673 |
| 2011 | 0 | 322 | 180 | 0 | 7 | 509 |
| 2012 | 3 | 572 | 169 | 0 | 1 | 745 |
| 2013 | 15 | 783 | 210 | 0 | 1 | 1009 |
| 2014 | 3 | 964 | 268 | 0 | 5 | 1240 |
| 2015 | 3 | 1075 | 379 | 0 | 2 | 1459 |
| 2016 | 1 | 1151 | 368 | 0 | 0 | 1520 |
| 2017 | 5 | 1423 | 490 | 0 | 4 | 1922 |
| 2018 | 8 | 1611 | 516 | 0 | 0 | 2135 |
| 2019 | 8 | 1413 | 558 | 0 | 4 | 1983 |
| 2020 | 5 | 1601 | 731 | 0 | 4 | 2341 |
| 2021 | 1 | 1349 | 558 | 0 | 5 | 1913 |
| 2022 | 6 | 1507 | 772 | 0 | 1 | 2286 |
| 2023 | 12 | 2091 | 519 | 0 | 5 | 2627 |
| 2024 | 8 | 2103 | 497 | 0 | 7 | 2615 |
| 2025 | 0 | 0 | 12 | 0 | 0 | 12 |
| Total | 93 | 34615 | 7201 | 1 | 87 | 41997 |