

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1970 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1971 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1974 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1975 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1976 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1977 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1978 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1979 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1980 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1981 | 0 | 0 | 2 | 0 | 2 | 4 |
| 1982 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1983 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1984 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1985 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1986 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1987 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1988 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1989 | 0 | 3 | 2 | 0 | 0 | 5 |
| 1990 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1991 | 0 | 2 | 2 | 0 | 0 | 4 |
| 1992 | 1 | 2 | 12 | 0 | 0 | 15 |
| 1993 | 1 | 4 | 8 | 0 | 0 | 13 |
| 1994 | 1 | 3 | 5 | 0 | 0 | 9 |
| 1995 | 0 | 7 | 8 | 0 | 0 | 15 |
| 1996 | 1 | 7 | 11 | 0 | 0 | 19 |
| 1997 | 1 | 2 | 9 | 0 | 0 | 12 |
| 1998 | 0 | 3 | 3 | 0 | 0 | 6 |
| 1999 | 0 | 3 | 2 | 0 | 0 | 5 |
| 2000 | 1 | 4 | 4 | 0 | 0 | 9 |
| 2001 | 0 | 0 | 4 | 0 | 0 | 4 |
| 2002 | 0 | 3 | 6 | 0 | 0 | 9 |
| 2003 | 0 | 2 | 10 | 0 | 0 | 12 |
| 2004 | 0 | 3 | 13 | 0 | 0 | 16 |
| 2005 | 0 | 16 | 7 | 0 | 0 | 23 |
| 2006 | 0 | 3 | 5 | 0 | 0 | 8 |
| 2007 | 1 | 3 | 9 | 0 | 0 | 13 |
| 2008 | 0 | 4 | 11 | 0 | 0 | 15 |
| 2009 | 0 | 7 | 14 | 0 | 0 | 21 |
| 2010 | 0 | 2 | 15 | 0 | 0 | 17 |
| 2011 | 0 | 3 | 15 | 0 | 0 | 18 |
| 2012 | 0 | 18 | 10 | 0 | 0 | 28 |
| 2013 | 0 | 22 | 4 | 0 | 0 | 26 |
| 2014 | 0 | 20 | 7 | 0 | 0 | 27 |
| 2015 | 0 | 18 | 11 | 0 | 0 | 29 |
| 2016 | 0 | 27 | 9 | 0 | 0 | 36 |
| 2017 | 0 | 40 | 14 | 0 | 0 | 54 |
| 2018 | 0 | 56 | 18 | 0 | 0 | 74 |
| 2019 | 0 | 41 | 20 | 0 | 0 | 61 |
| 2020 | 0 | 6 | 25 | 0 | 0 | 31 |
| 2021 | 0 | 13 | 16 | 0 | 0 | 29 |
| 2022 | 0 | 7 | 15 | 0 | 0 | 22 |
| 2023 | 0 | 35 | 11 | 0 | 0 | 46 |
| 2024 | 0 | 25 | 10 | 0 | 0 | 35 |
| 2025 | 0 | 0 | 1 | 0 | 0 | 1 |
| Total | 7 | 422 | 367 | 0 | 3 | 799 |