

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 5 | 0 | 40 | 45 |
| 1970 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1971 | 0 | 0 | 1 | 0 | 3 | 4 |
| 1972 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1973 | 0 | 0 | 1 | 0 | 5 | 6 |
| 1974 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1975 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1976 | 0 | 0 | 2 | 0 | 4 | 6 |
| 1977 | 0 | 0 | 7 | 0 | 4 | 11 |
| 1978 | 0 | 0 | 3 | 0 | 2 | 5 |
| 1979 | 1 | 1 | 11 | 0 | 6 | 19 |
| 1980 | 0 | 0 | 4 | 0 | 3 | 7 |
| 1981 | 0 | 0 | 4 | 0 | 5 | 9 |
| 1982 | 0 | 0 | 4 | 0 | 2 | 6 |
| 1983 | 0 | 0 | 3 | 0 | 5 | 8 |
| 1984 | 0 | 0 | 1 | 0 | 3 | 4 |
| 1985 | 1 | 0 | 1 | 0 | 2 | 4 |
| 1986 | 3 | 0 | 1 | 0 | 3 | 7 |
| 1987 | 3 | 2 | 5 | 0 | 4 | 14 |
| 1988 | 1 | 0 | 8 | 0 | 8 | 17 |
| 1989 | 1 | 1 | 1 | 0 | 10 | 13 |
| 1990 | 2 | 5 | 24 | 0 | 7 | 38 |
| 1991 | 4 | 3 | 15 | 1 | 3 | 26 |
| 1992 | 1 | 4 | 7 | 0 | 6 | 18 |
| 1993 | 1 | 7 | 13 | 0 | 8 | 29 |
| 1994 | 4 | 17 | 33 | 0 | 5 | 59 |
| 1995 | 1 | 1 | 20 | 0 | 6 | 28 |
| 1996 | 2 | 5 | 27 | 0 | 11 | 45 |
| 1997 | 1 | 4 | 24 | 0 | 6 | 35 |
| 1998 | 1 | 20 | 48 | 0 | 9 | 78 |
| 1999 | 1 | 5 | 22 | 0 | 3 | 31 |
| 2000 | 2 | 5 | 56 | 1 | 7 | 71 |
| 2001 | 0 | 0 | 16 | 0 | 1 | 17 |
| 2002 | 0 | 0 | 30 | 0 | 1 | 31 |
| 2003 | 1 | 1 | 63 | 0 | 4 | 69 |
| 2004 | 1 | 2 | 68 | 0 | 1 | 72 |
| 2005 | 0 | 2 | 60 | 0 | 5 | 67 |
| 2006 | 0 | 0 | 48 | 0 | 5 | 53 |
| 2007 | 0 | 0 | 35 | 0 | 8 | 43 |
| 2008 | 0 | 1 | 63 | 0 | 16 | 80 |
| 2009 | 0 | 4 | 38 | 0 | 3 | 45 |
| 2010 | 0 | 1 | 40 | 0 | 5 | 46 |
| 2011 | 7 | 8 | 113 | 0 | 2 | 130 |
| 2012 | 6 | 2 | 65 | 0 | 9 | 82 |
| 2013 | 1 | 0 | 38 | 0 | 9 | 48 |
| 2014 | 3 | 136 | 80 | 0 | 13 | 232 |
| 2015 | 3 | 10 | 133 | 0 | 12 | 158 |
| 2016 | 0 | 5 | 121 | 0 | 22 | 148 |
| 2017 | 0 | 12 | 238 | 0 | 25 | 275 |
| 2018 | 0 | 24 | 163 | 0 | 16 | 203 |
| 2019 | 3 | 25 | 327 | 0 | 15 | 370 |
| 2020 | 0 | 11 | 142 | 0 | 32 | 185 |
| 2021 | 0 | 4 | 73 | 0 | 31 | 108 |
| 2022 | 0 | 4 | 105 | 0 | 26 | 135 |
| 2023 | 2 | 5 | 166 | 0 | 12 | 185 |
| 2024 | 0 | 13 | 398 | 0 | 18 | 429 |
| 2025 | 0 | 2 | 15 | 0 | 2 | 19 |
| 2026 | 0 | 0 | 0 | 0 | 3 | 3 |
| Total | 57 | 352 | 2989 | 2 | 484 | 3884 |