

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 1 | 0 | 6 | 0 | 0 | 7 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1974 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1975 | 0 | 3 | 0 | 0 | 0 | 3 |
| 1976 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1977 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1978 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1979 | 0 | 2 | 1 | 0 | 0 | 3 |
| 1980 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1981 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1982 | 0 | 2 | 1 | 0 | 0 | 3 |
| 1983 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1984 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1985 | 1 | 2 | 3 | 0 | 0 | 6 |
| 1986 | 0 | 5 | 4 | 0 | 0 | 9 |
| 1987 | 0 | 1 | 12 | 0 | 0 | 13 |
| 1988 | 2 | 5 | 4 | 0 | 0 | 11 |
| 1989 | 0 | 7 | 9 | 0 | 0 | 16 |
| 1990 | 0 | 12 | 14 | 0 | 0 | 26 |
| 1991 | 7 | 9 | 7 | 0 | 0 | 23 |
| 1992 | 1 | 7 | 10 | 0 | 0 | 18 |
| 1993 | 1 | 5 | 7 | 0 | 0 | 13 |
| 1994 | 1 | 27 | 15 | 0 | 0 | 43 |
| 1995 | 2 | 14 | 15 | 0 | 0 | 31 |
| 1996 | 3 | 25 | 13 | 0 | 0 | 41 |
| 1997 | 0 | 63 | 12 | 0 | 0 | 75 |
| 1998 | 2 | 62 | 13 | 0 | 0 | 77 |
| 1999 | 2 | 72 | 16 | 0 | 0 | 90 |
| 2000 | 1 | 65 | 26 | 0 | 0 | 92 |
| 2001 | 2 | 63 | 15 | 0 | 0 | 80 |
| 2002 | 0 | 124 | 42 | 0 | 0 | 166 |
| 2003 | 1 | 96 | 45 | 0 | 0 | 142 |
| 2004 | 0 | 116 | 33 | 0 | 0 | 149 |
| 2005 | 1 | 72 | 36 | 0 | 0 | 109 |
| 2006 | 0 | 94 | 41 | 0 | 0 | 135 |
| 2007 | 1 | 108 | 27 | 0 | 0 | 136 |
| 2008 | 1 | 56 | 39 | 0 | 0 | 96 |
| 2009 | 0 | 98 | 85 | 0 | 0 | 183 |
| 2010 | 0 | 71 | 40 | 0 | 0 | 111 |
| 2011 | 0 | 70 | 71 | 0 | 0 | 141 |
| 2012 | 0 | 139 | 87 | 0 | 0 | 226 |
| 2013 | 1 | 107 | 51 | 0 | 0 | 159 |
| 2014 | 2 | 125 | 23 | 0 | 0 | 150 |
| 2015 | 1 | 120 | 39 | 0 | 0 | 160 |
| 2016 | 0 | 137 | 34 | 0 | 0 | 171 |
| 2017 | 3 | 173 | 45 | 0 | 0 | 221 |
| 2018 | 3 | 163 | 41 | 0 | 0 | 207 |
| 2019 | 3 | 182 | 50 | 0 | 0 | 235 |
| 2020 | 2 | 233 | 102 | 0 | 0 | 337 |
| 2021 | 5 | 210 | 78 | 0 | 0 | 293 |
| 2022 | 1 | 212 | 111 | 0 | 0 | 324 |
| 2023 | 1 | 327 | 61 | 0 | 0 | 389 |
| 2024 | 4 | 276 | 56 | 0 | 0 | 336 |
| 2025 | 0 | 1 | 8 | 0 | 0 | 9 |
| Total | 56 | 3764 | 1461 | 0 | 0 | 5281 |