

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 3 | 13 | 0 | 0 | 16 |
| 1970 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1971 | 0 | 7 | 1 | 0 | 0 | 8 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1974 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1975 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1976 | 1 | 0 | 2 | 0 | 0 | 3 |
| 1977 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1978 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1979 | 1 | 1 | 1 | 0 | 0 | 3 |
| 1980 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1981 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1982 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1983 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1984 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1985 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1986 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1987 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1988 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1989 | 0 | 2 | 6 | 0 | 0 | 8 |
| 1990 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1991 | 4 | 2 | 3 | 0 | 0 | 9 |
| 1992 | 0 | 3 | 3 | 0 | 0 | 6 |
| 1993 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1994 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1995 | 0 | 0 | 6 | 0 | 0 | 6 |
| 1996 | 0 | 2 | 4 | 0 | 0 | 6 |
| 1997 | 0 | 3 | 7 | 0 | 0 | 10 |
| 1998 | 0 | 3 | 2 | 0 | 0 | 5 |
| 1999 | 0 | 0 | 6 | 0 | 0 | 6 |
| 2000 | 0 | 0 | 4 | 0 | 0 | 4 |
| 2001 | 1 | 1 | 2 | 0 | 0 | 4 |
| 2002 | 0 | 3 | 25 | 0 | 0 | 28 |
| 2003 | 0 | 4 | 42 | 0 | 0 | 46 |
| 2004 | 0 | 4 | 33 | 0 | 0 | 37 |
| 2005 | 0 | 19 | 15 | 0 | 0 | 34 |
| 2006 | 0 | 4 | 19 | 0 | 0 | 23 |
| 2007 | 2 | 10 | 20 | 0 | 0 | 32 |
| 2008 | 0 | 2 | 17 | 0 | 0 | 19 |
| 2009 | 0 | 14 | 11 | 0 | 0 | 25 |
| 2010 | 0 | 16 | 21 | 0 | 0 | 37 |
| 2011 | 0 | 7 | 13 | 0 | 0 | 20 |
| 2012 | 1 | 78 | 19 | 0 | 0 | 98 |
| 2013 | 2 | 21 | 31 | 0 | 0 | 54 |
| 2014 | 6 | 50 | 40 | 0 | 0 | 96 |
| 2015 | 5 | 40 | 29 | 0 | 0 | 74 |
| 2016 | 1 | 32 | 69 | 0 | 0 | 102 |
| 2017 | 2 | 42 | 17 | 0 | 0 | 61 |
| 2018 | 1 | 32 | 21 | 0 | 0 | 54 |
| 2019 | 1 | 37 | 19 | 0 | 0 | 57 |
| 2020 | 0 | 37 | 32 | 0 | 0 | 69 |
| 2021 | 2 | 51 | 23 | 0 | 0 | 76 |
| 2022 | 1 | 56 | 44 | 0 | 0 | 101 |
| 2023 | 6 | 123 | 42 | 0 | 0 | 171 |
| 2024 | 6 | 112 | 38 | 0 | 0 | 156 |
| 2025 | 0 | 0 | 13 | 0 | 0 | 13 |
| Total | 43 | 829 | 751 | 0 | 1 | 1624 |