

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 2 | 3 | 0 | 5 | 10 |
| 1970 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1974 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1975 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1976 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1977 | 0 | 0 | 0 | 0 | 4 | 4 |
| 1978 | 0 | 0 | 1 | 0 | 3 | 4 |
| 1979 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1980 | 1 | 0 | 1 | 0 | 1 | 3 |
| 1981 | 0 | 0 | 2 | 0 | 3 | 5 |
| 1982 | 0 | 0 | 2 | 0 | 5 | 7 |
| 1983 | 0 | 0 | 3 | 0 | 5 | 8 |
| 1984 | 0 | 0 | 3 | 0 | 5 | 8 |
| 1985 | 0 | 1 | 2 | 0 | 4 | 7 |
| 1986 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1987 | 0 | 3 | 4 | 1 | 4 | 12 |
| 1988 | 0 | 3 | 8 | 0 | 4 | 15 |
| 1989 | 0 | 1 | 3 | 1 | 5 | 10 |
| 1990 | 0 | 5 | 3 | 0 | 6 | 14 |
| 1991 | 0 | 6 | 6 | 0 | 1 | 13 |
| 1992 | 0 | 7 | 2 | 0 | 3 | 12 |
| 1993 | 0 | 10 | 2 | 0 | 1 | 13 |
| 1994 | 1 | 259 | 16 | 0 | 5 | 281 |
| 1995 | 1 | 241 | 17 | 0 | 6 | 265 |
| 1996 | 0 | 207 | 14 | 0 | 3 | 224 |
| 1997 | 2 | 105 | 34 | 0 | 6 | 147 |
| 1998 | 0 | 315 | 1 | 0 | 2 | 318 |
| 1999 | 0 | 25 | 1 | 0 | 6 | 32 |
| 2000 | 2 | 326 | 12 | 0 | 10 | 350 |
| 2001 | 0 | 101 | 10 | 0 | 8 | 119 |
| 2002 | 0 | 219 | 14 | 0 | 7 | 240 |
| 2003 | 0 | 44 | 6 | 0 | 5 | 55 |
| 2004 | 1 | 188 | 7 | 0 | 4 | 200 |
| 2005 | 1 | 89 | 6 | 0 | 7 | 103 |
| 2006 | 1 | 101 | 7 | 0 | 8 | 117 |
| 2007 | 2 | 126 | 21 | 0 | 10 | 159 |
| 2008 | 0 | 57 | 17 | 0 | 6 | 80 |
| 2009 | 0 | 3 | 16 | 0 | 2 | 21 |
| 2010 | 0 | 29 | 30 | 0 | 3 | 62 |
| 2011 | 0 | 24 | 17 | 0 | 5 | 46 |
| 2012 | 0 | 99 | 48 | 0 | 11 | 158 |
| 2013 | 2 | 129 | 49 | 0 | 10 | 190 |
| 2014 | 1 | 99 | 62 | 0 | 13 | 175 |
| 2015 | 2 | 108 | 89 | 0 | 10 | 209 |
| 2016 | 1 | 172 | 129 | 0 | 13 | 315 |
| 2017 | 1 | 181 | 120 | 0 | 11 | 313 |
| 2018 | 4 | 161 | 147 | 0 | 13 | 325 |
| 2019 | 0 | 121 | 99 | 0 | 10 | 230 |
| 2020 | 2 | 130 | 127 | 0 | 14 | 273 |
| 2021 | 1 | 137 | 125 | 0 | 11 | 274 |
| 2022 | 3 | 157 | 152 | 0 | 8 | 320 |
| 2023 | 3 | 149 | 96 | 0 | 13 | 261 |
| 2024 | 4 | 179 | 109 | 0 | 10 | 302 |
| 2025 | 0 | 10 | 8 | 0 | 0 | 18 |
| 2026 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 36 | 4329 | 1657 | 2 | 315 | 6339 |