

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 3 | 6 | 8 | 0 | 4 | 21 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 10 | 0 | 0 | 1 | 11 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1974 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1975 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1976 | 0 | 1 | 1 | 0 | 3 | 5 |
| 1977 | 0 | 0 | 4 | 0 | 1 | 5 |
| 1978 | 0 | 1 | 1 | 0 | 2 | 4 |
| 1979 | 1 | 0 | 2 | 0 | 1 | 4 |
| 1980 | 0 | 1 | 4 | 0 | 1 | 6 |
| 1981 | 0 | 1 | 3 | 0 | 2 | 6 |
| 1982 | 0 | 3 | 2 | 0 | 3 | 8 |
| 1983 | 0 | 2 | 3 | 0 | 2 | 7 |
| 1984 | 0 | 1 | 1 | 0 | 3 | 5 |
| 1985 | 0 | 0 | 5 | 0 | 1 | 6 |
| 1986 | 0 | 6 | 4 | 0 | 3 | 13 |
| 1987 | 0 | 3 | 8 | 0 | 7 | 18 |
| 1988 | 0 | 6 | 4 | 0 | 3 | 13 |
| 1989 | 0 | 6 | 10 | 0 | 4 | 20 |
| 1990 | 1 | 20 | 7 | 0 | 4 | 32 |
| 1991 | 3 | 8 | 7 | 0 | 2 | 20 |
| 1992 | 1 | 3 | 12 | 0 | 2 | 18 |
| 1993 | 0 | 15 | 16 | 0 | 6 | 37 |
| 1994 | 0 | 45 | 28 | 0 | 1 | 74 |
| 1995 | 1 | 24 | 11 | 0 | 2 | 38 |
| 1996 | 2 | 34 | 26 | 0 | 2 | 64 |
| 1997 | 2 | 90 | 38 | 0 | 2 | 132 |
| 1998 | 2 | 85 | 26 | 0 | 1 | 114 |
| 1999 | 1 | 69 | 23 | 0 | 5 | 98 |
| 2000 | 3 | 83 | 22 | 0 | 1 | 109 |
| 2001 | 7 | 59 | 15 | 0 | 5 | 86 |
| 2002 | 1 | 86 | 34 | 0 | 2 | 123 |
| 2003 | 2 | 87 | 31 | 0 | 3 | 123 |
| 2004 | 2 | 166 | 77 | 0 | 3 | 248 |
| 2005 | 1 | 102 | 46 | 0 | 4 | 153 |
| 2006 | 7 | 88 | 89 | 0 | 2 | 186 |
| 2007 | 2 | 66 | 88 | 0 | 3 | 159 |
| 2008 | 0 | 92 | 120 | 3 | 3 | 218 |
| 2009 | 0 | 59 | 122 | 0 | 5 | 186 |
| 2010 | 2 | 140 | 157 | 0 | 5 | 304 |
| 2011 | 1 | 41 | 210 | 0 | 5 | 257 |
| 2012 | 8 | 163 | 129 | 0 | 3 | 303 |
| 2013 | 6 | 305 | 125 | 0 | 5 | 441 |
| 2014 | 9 | 333 | 163 | 0 | 3 | 508 |
| 2015 | 10 | 484 | 186 | 0 | 7 | 687 |
| 2016 | 13 | 477 | 225 | 0 | 7 | 722 |
| 2017 | 17 | 656 | 285 | 0 | 7 | 965 |
| 2018 | 13 | 722 | 220 | 0 | 7 | 962 |
| 2019 | 11 | 886 | 252 | 0 | 6 | 1155 |
| 2020 | 6 | 898 | 384 | 0 | 5 | 1293 |
| 2021 | 9 | 1104 | 378 | 0 | 7 | 1498 |
| 2022 | 5 | 1087 | 535 | 0 | 10 | 1637 |
| 2023 | 26 | 1241 | 246 | 0 | 11 | 1524 |
| 2024 | 28 | 1215 | 330 | 0 | 13 | 1586 |
| 2025 | 0 | 1 | 8 | 0 | 1 | 10 |
| Total | 206 | 11082 | 4738 | 3 | 202 | 16231 |