

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 7 | 0 | 7 | 14 |
| 1970 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1971 | 0 | 0 | 1 | 0 | 2 | 3 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 1 | 0 | 2 | 3 |
| 1974 | 0 | 6 | 2 | 0 | 1 | 9 |
| 1975 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1976 | 0 | 2 | 1 | 0 | 1 | 4 |
| 1977 | 0 | 3 | 7 | 0 | 0 | 10 |
| 1978 | 0 | 2 | 4 | 0 | 2 | 8 |
| 1979 | 0 | 2 | 12 | 0 | 2 | 16 |
| 1980 | 0 | 0 | 4 | 0 | 3 | 7 |
| 1981 | 0 | 1 | 4 | 0 | 5 | 10 |
| 1982 | 0 | 0 | 6 | 0 | 4 | 10 |
| 1983 | 0 | 3 | 5 | 0 | 3 | 11 |
| 1984 | 0 | 0 | 6 | 0 | 4 | 10 |
| 1985 | 1 | 2 | 4 | 0 | 7 | 14 |
| 1986 | 1 | 4 | 7 | 0 | 6 | 18 |
| 1987 | 2 | 4 | 7 | 0 | 4 | 17 |
| 1988 | 2 | 2 | 8 | 0 | 5 | 17 |
| 1989 | 2 | 7 | 12 | 0 | 7 | 28 |
| 1990 | 1 | 7 | 19 | 0 | 5 | 32 |
| 1991 | 6 | 10 | 35 | 1 | 3 | 55 |
| 1992 | 1 | 6 | 18 | 0 | 5 | 30 |
| 1993 | 7 | 11 | 37 | 0 | 5 | 60 |
| 1994 | 4 | 24 | 36 | 0 | 7 | 71 |
| 1995 | 7 | 6 | 46 | 0 | 9 | 68 |
| 1996 | 6 | 14 | 28 | 0 | 5 | 53 |
| 1997 | 4 | 18 | 50 | 0 | 9 | 81 |
| 1998 | 4 | 12 | 45 | 0 | 11 | 72 |
| 1999 | 0 | 6 | 35 | 0 | 10 | 51 |
| 2000 | 2 | 6 | 43 | 0 | 9 | 60 |
| 2001 | 0 | 5 | 41 | 0 | 8 | 54 |
| 2002 | 0 | 1 | 50 | 0 | 8 | 59 |
| 2003 | 2 | 5 | 57 | 0 | 4 | 68 |
| 2004 | 0 | 7 | 41 | 0 | 7 | 55 |
| 2005 | 0 | 5 | 88 | 0 | 6 | 99 |
| 2006 | 2 | 7 | 77 | 0 | 9 | 95 |
| 2007 | 8 | 6 | 73 | 0 | 9 | 96 |
| 2008 | 33 | 2 | 94 | 1 | 5 | 135 |
| 2009 | 3 | 4 | 172 | 0 | 9 | 188 |
| 2010 | 2 | 0 | 288 | 0 | 7 | 297 |
| 2011 | 3 | 5 | 387 | 0 | 13 | 408 |
| 2012 | 7 | 4 | 535 | 0 | 27 | 573 |
| 2013 | 1 | 0 | 360 | 0 | 17 | 378 |
| 2014 | 4 | 1 | 250 | 1 | 15 | 271 |
| 2015 | 4 | 3 | 288 | 0 | 24 | 319 |
| 2016 | 2 | 2 | 389 | 0 | 31 | 424 |
| 2017 | 4 | 39 | 532 | 0 | 32 | 607 |
| 2018 | 7 | 3 | 573 | 0 | 34 | 617 |
| 2019 | 6 | 3 | 569 | 0 | 26 | 604 |
| 2020 | 3 | 1 | 675 | 0 | 39 | 718 |
| 2021 | 1 | 2 | 583 | 1 | 28 | 615 |
| 2022 | 2 | 2 | 714 | 1 | 38 | 757 |
| 2023 | 3 | 11 | 702 | 0 | 40 | 756 |
| 2024 | 15 | 4 | 701 | 0 | 49 | 769 |
| 2025 | 0 | 0 | 14 | 0 | 0 | 14 |
| Total | 162 | 280 | 8745 | 5 | 630 | 9822 |