

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 6 | 10 | 0 | 1 | 17 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 8 | 1 | 0 | 0 | 9 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1974 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1975 | 1 | 0 | 0 | 0 | 0 | 1 |
| 1976 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1977 | 1 | 1 | 2 | 0 | 0 | 4 |
| 1978 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1979 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1980 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1981 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1982 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1983 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1984 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1985 | 0 | 2 | 4 | 0 | 0 | 6 |
| 1986 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1987 | 2 | 5 | 4 | 0 | 0 | 11 |
| 1988 | 0 | 4 | 1 | 0 | 0 | 5 |
| 1989 | 0 | 4 | 5 | 0 | 0 | 9 |
| 1990 | 1 | 9 | 2 | 0 | 0 | 12 |
| 1991 | 2 | 6 | 2 | 0 | 0 | 10 |
| 1992 | 0 | 6 | 3 | 0 | 0 | 9 |
| 1993 | 1 | 14 | 3 | 0 | 0 | 18 |
| 1994 | 2 | 21 | 6 | 0 | 0 | 29 |
| 1995 | 1 | 13 | 8 | 0 | 0 | 22 |
| 1996 | 3 | 19 | 5 | 0 | 0 | 27 |
| 1997 | 1 | 40 | 8 | 0 | 0 | 49 |
| 1998 | 2 | 50 | 6 | 0 | 0 | 58 |
| 1999 | 1 | 18 | 14 | 0 | 0 | 33 |
| 2000 | 1 | 34 | 12 | 0 | 0 | 47 |
| 2001 | 2 | 24 | 5 | 0 | 0 | 31 |
| 2002 | 0 | 32 | 25 | 0 | 0 | 57 |
| 2003 | 0 | 15 | 17 | 0 | 0 | 32 |
| 2004 | 1 | 86 | 26 | 0 | 0 | 113 |
| 2005 | 1 | 56 | 22 | 0 | 0 | 79 |
| 2006 | 0 | 37 | 32 | 0 | 1 | 70 |
| 2007 | 3 | 33 | 31 | 0 | 0 | 67 |
| 2008 | 1 | 28 | 33 | 0 | 0 | 62 |
| 2009 | 0 | 34 | 51 | 0 | 0 | 85 |
| 2010 | 0 | 32 | 41 | 0 | 0 | 73 |
| 2011 | 2 | 20 | 55 | 0 | 0 | 77 |
| 2012 | 2 | 61 | 44 | 0 | 0 | 107 |
| 2013 | 3 | 58 | 36 | 0 | 0 | 97 |
| 2014 | 1 | 85 | 32 | 0 | 0 | 118 |
| 2015 | 1 | 77 | 55 | 0 | 0 | 133 |
| 2016 | 1 | 83 | 54 | 0 | 1 | 139 |
| 2017 | 1 | 114 | 41 | 0 | 0 | 156 |
| 2018 | 2 | 106 | 31 | 0 | 0 | 139 |
| 2019 | 1 | 121 | 30 | 0 | 0 | 152 |
| 2020 | 1 | 155 | 81 | 0 | 6 | 243 |
| 2021 | 0 | 139 | 51 | 0 | 0 | 190 |
| 2022 | 0 | 138 | 84 | 0 | 0 | 222 |
| 2023 | 1 | 165 | 50 | 0 | 0 | 216 |
| 2024 | 3 | 161 | 57 | 0 | 0 | 221 |
| 2025 | 0 | 0 | 2 | 0 | 0 | 2 |
| Total | 46 | 2122 | 1105 | 0 | 10 | 3283 |