

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 8 | 0 | 54 | 63 |
| 1970 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1971 | 0 | 0 | 1 | 0 | 5 | 6 |
| 1972 | 0 | 0 | 1 | 0 | 5 | 6 |
| 1973 | 0 | 0 | 1 | 0 | 7 | 8 |
| 1974 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1975 | 0 | 0 | 1 | 0 | 2 | 3 |
| 1976 | 0 | 0 | 2 | 0 | 3 | 5 |
| 1977 | 0 | 0 | 2 | 0 | 11 | 13 |
| 1978 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1979 | 0 | 1 | 1 | 0 | 6 | 8 |
| 1980 | 0 | 0 | 1 | 0 | 6 | 7 |
| 1981 | 0 | 0 | 1 | 0 | 8 | 9 |
| 1982 | 0 | 0 | 1 | 0 | 6 | 7 |
| 1983 | 0 | 1 | 2 | 0 | 3 | 6 |
| 1984 | 0 | 0 | 0 | 0 | 14 | 14 |
| 1985 | 0 | 0 | 4 | 0 | 8 | 12 |
| 1986 | 0 | 1 | 5 | 0 | 9 | 15 |
| 1987 | 0 | 2 | 3 | 0 | 9 | 14 |
| 1988 | 0 | 2 | 4 | 0 | 5 | 11 |
| 1989 | 0 | 2 | 3 | 0 | 11 | 16 |
| 1990 | 0 | 1 | 1 | 1 | 6 | 9 |
| 1991 | 1 | 3 | 9 | 1 | 2 | 16 |
| 1992 | 0 | 9 | 13 | 0 | 7 | 29 |
| 1993 | 0 | 9 | 5 | 0 | 7 | 21 |
| 1994 | 0 | 59 | 7 | 0 | 16 | 82 |
| 1995 | 0 | 29 | 9 | 1 | 7 | 46 |
| 1996 | 0 | 43 | 3 | 0 | 7 | 53 |
| 1997 | 0 | 17 | 10 | 0 | 10 | 37 |
| 1998 | 0 | 45 | 5 | 1 | 7 | 58 |
| 1999 | 0 | 4 | 3 | 0 | 6 | 13 |
| 2000 | 0 | 17 | 5 | 0 | 14 | 36 |
| 2001 | 0 | 16 | 12 | 0 | 14 | 42 |
| 2002 | 0 | 39 | 19 | 0 | 10 | 68 |
| 2003 | 0 | 13 | 11 | 0 | 5 | 29 |
| 2004 | 0 | 78 | 11 | 0 | 11 | 100 |
| 2005 | 1 | 23 | 10 | 0 | 10 | 44 |
| 2006 | 0 | 35 | 11 | 0 | 13 | 59 |
| 2007 | 0 | 29 | 13 | 0 | 9 | 51 |
| 2008 | 0 | 18 | 21 | 0 | 9 | 48 |
| 2009 | 0 | 1 | 20 | 0 | 14 | 35 |
| 2010 | 0 | 37 | 31 | 0 | 12 | 80 |
| 2011 | 0 | 13 | 36 | 1 | 16 | 66 |
| 2012 | 1 | 31 | 57 | 0 | 46 | 135 |
| 2013 | 0 | 28 | 65 | 0 | 40 | 133 |
| 2014 | 0 | 36 | 85 | 0 | 24 | 145 |
| 2015 | 0 | 32 | 131 | 0 | 107 | 270 |
| 2016 | 0 | 41 | 84 | 0 | 54 | 179 |
| 2017 | 0 | 39 | 82 | 0 | 31 | 152 |
| 2018 | 0 | 54 | 86 | 0 | 34 | 174 |
| 2019 | 2 | 60 | 131 | 0 | 37 | 230 |
| 2020 | 1 | 50 | 213 | 0 | 64 | 328 |
| 2021 | 2 | 35 | 207 | 0 | 117 | 361 |
| 2022 | 2 | 38 | 113 | 0 | 32 | 185 |
| 2023 | 0 | 58 | 370 | 0 | 96 | 524 |
| 2024 | 0 | 47 | 248 | 0 | 187 | 482 |
| 2025 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 10 | 1097 | 2182 | 5 | 1256 | 4550 |