

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 4 | 0 | 21 | 26 |
| 1970 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1971 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1972 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1973 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1974 | 0 | 1 | 3 | 0 | 1 | 5 |
| 1975 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1976 | 0 | 0 | 1 | 0 | 3 | 4 |
| 1977 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1978 | 0 | 0 | 1 | 0 | 2 | 3 |
| 1979 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1980 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1981 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1982 | 0 | 1 | 0 | 0 | 3 | 4 |
| 1983 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1984 | 0 | 1 | 1 | 0 | 1 | 3 |
| 1985 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1986 | 0 | 0 | 3 | 0 | 3 | 6 |
| 1987 | 0 | 1 | 4 | 0 | 2 | 7 |
| 1988 | 0 | 0 | 7 | 0 | 1 | 8 |
| 1989 | 2 | 0 | 7 | 0 | 5 | 14 |
| 1990 | 1 | 1 | 14 | 0 | 4 | 20 |
| 1991 | 2 | 3 | 19 | 0 | 4 | 28 |
| 1992 | 5 | 5 | 32 | 0 | 6 | 48 |
| 1993 | 5 | 1 | 18 | 0 | 4 | 28 |
| 1994 | 2 | 13 | 74 | 0 | 3 | 92 |
| 1995 | 2 | 12 | 39 | 0 | 1 | 54 |
| 1996 | 2 | 8 | 40 | 0 | 1 | 51 |
| 1997 | 2 | 4 | 17 | 0 | 8 | 31 |
| 1998 | 1 | 4 | 38 | 0 | 1 | 44 |
| 1999 | 2 | 2 | 10 | 0 | 2 | 16 |
| 2000 | 3 | 1 | 27 | 0 | 3 | 34 |
| 2001 | 4 | 3 | 19 | 0 | 3 | 29 |
| 2002 | 3 | 17 | 63 | 0 | 5 | 88 |
| 2003 | 2 | 3 | 38 | 0 | 4 | 47 |
| 2004 | 2 | 5 | 72 | 0 | 5 | 84 |
| 2005 | 1 | 8 | 34 | 1 | 5 | 49 |
| 2006 | 4 | 7 | 110 | 0 | 10 | 131 |
| 2007 | 4 | 6 | 99 | 0 | 6 | 115 |
| 2008 | 2 | 7 | 32 | 2 | 3 | 46 |
| 2009 | 3 | 3 | 21 | 0 | 7 | 34 |
| 2010 | 3 | 44 | 48 | 0 | 6 | 101 |
| 2011 | 0 | 20 | 30 | 0 | 8 | 58 |
| 2012 | 2 | 47 | 47 | 0 | 3 | 99 |
| 2013 | 1 | 40 | 69 | 0 | 12 | 122 |
| 2014 | 13 | 38 | 57 | 0 | 7 | 115 |
| 2015 | 2 | 52 | 66 | 0 | 13 | 133 |
| 2016 | 3 | 202 | 64 | 0 | 13 | 282 |
| 2017 | 3 | 80 | 76 | 0 | 7 | 166 |
| 2018 | 5 | 55 | 81 | 0 | 13 | 154 |
| 2019 | 3 | 73 | 87 | 0 | 6 | 169 |
| 2020 | 7 | 66 | 117 | 0 | 15 | 205 |
| 2021 | 4 | 65 | 101 | 0 | 13 | 183 |
| 2022 | 7 | 69 | 127 | 0 | 12 | 215 |
| 2023 | 10 | 106 | 130 | 0 | 18 | 264 |
| 2024 | 6 | 122 | 168 | 0 | 23 | 319 |
| 2025 | 0 | 0 | 5 | 0 | 0 | 5 |
| Total | 123 | 1197 | 2131 | 3 | 306 | 3760 |