

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1974 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1975 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1976 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1977 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1978 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1979 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1980 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1981 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1982 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1983 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1984 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1985 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1986 | 0 | 2 | 2 | 0 | 0 | 4 |
| 1987 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1988 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1989 | 1 | 2 | 7 | 0 | 0 | 10 |
| 1990 | 0 | 3 | 1 | 0 | 0 | 4 |
| 1991 | 2 | 6 | 2 | 0 | 0 | 10 |
| 1992 | 0 | 6 | 3 | 0 | 0 | 9 |
| 1993 | 5 | 19 | 2 | 0 | 0 | 26 |
| 1994 | 0 | 59 | 6 | 0 | 0 | 65 |
| 1995 | 2 | 54 | 3 | 0 | 0 | 59 |
| 1996 | 0 | 43 | 0 | 0 | 0 | 43 |
| 1997 | 1 | 17 | 4 | 0 | 0 | 22 |
| 1998 | 1 | 42 | 1 | 0 | 0 | 44 |
| 1999 | 0 | 1 | 1 | 0 | 0 | 2 |
| 2000 | 0 | 63 | 5 | 0 | 0 | 68 |
| 2001 | 1 | 65 | 2 | 0 | 0 | 68 |
| 2002 | 0 | 62 | 4 | 0 | 0 | 66 |
| 2003 | 1 | 55 | 12 | 0 | 0 | 68 |
| 2004 | 2 | 52 | 11 | 0 | 0 | 65 |
| 2005 | 1 | 6 | 8 | 0 | 0 | 15 |
| 2006 | 2 | 48 | 19 | 0 | 0 | 69 |
| 2007 | 2 | 36 | 13 | 0 | 0 | 51 |
| 2008 | 0 | 1 | 13 | 0 | 0 | 14 |
| 2009 | 1 | 3 | 9 | 0 | 0 | 13 |
| 2010 | 1 | 20 | 18 | 0 | 0 | 39 |
| 2011 | 3 | 13 | 16 | 0 | 0 | 32 |
| 2012 | 4 | 18 | 17 | 0 | 0 | 39 |
| 2013 | 5 | 35 | 41 | 0 | 0 | 81 |
| 2014 | 7 | 44 | 31 | 0 | 0 | 82 |
| 2015 | 5 | 42 | 53 | 0 | 0 | 100 |
| 2016 | 5 | 80 | 71 | 0 | 0 | 156 |
| 2017 | 8 | 95 | 61 | 0 | 0 | 164 |
| 2018 | 5 | 71 | 42 | 0 | 0 | 118 |
| 2019 | 8 | 59 | 48 | 0 | 0 | 115 |
| 2020 | 9 | 94 | 71 | 0 | 0 | 174 |
| 2021 | 2 | 92 | 63 | 0 | 0 | 157 |
| 2022 | 5 | 72 | 89 | 0 | 0 | 166 |
| 2023 | 12 | 114 | 67 | 0 | 0 | 193 |
| 2024 | 14 | 109 | 102 | 0 | 1 | 226 |
| 2025 | 0 | 0 | 2 | 0 | 0 | 2 |
| Total | 115 | 1605 | 937 | 0 | 1 | 2658 |