

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 4 | 2 | 1 | 0 | 0 | 7 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1974 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1975 | 0 | 4 | 1 | 0 | 0 | 5 |
| 1976 | 1 | 1 | 0 | 0 | 0 | 2 |
| 1977 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1978 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1979 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1980 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1981 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1982 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1983 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1984 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1985 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1986 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1987 | 0 | 2 | 1 | 0 | 0 | 3 |
| 1988 | 1 | 4 | 4 | 0 | 0 | 9 |
| 1989 | 1 | 4 | 1 | 0 | 0 | 6 |
| 1990 | 1 | 5 | 0 | 0 | 0 | 6 |
| 1991 | 0 | 3 | 0 | 0 | 0 | 3 |
| 1992 | 0 | 6 | 0 | 0 | 0 | 6 |
| 1993 | 0 | 2 | 1 | 0 | 0 | 3 |
| 1994 | 2 | 13 | 4 | 0 | 0 | 19 |
| 1995 | 0 | 21 | 3 | 0 | 0 | 24 |
| 1996 | 2 | 12 | 5 | 0 | 0 | 19 |
| 1997 | 0 | 32 | 4 | 0 | 0 | 36 |
| 1998 | 5 | 28 | 1 | 0 | 0 | 34 |
| 1999 | 0 | 11 | 2 | 0 | 0 | 13 |
| 2000 | 1 | 20 | 4 | 0 | 0 | 25 |
| 2001 | 0 | 21 | 2 | 0 | 0 | 23 |
| 2002 | 1 | 33 | 6 | 0 | 0 | 40 |
| 2003 | 0 | 40 | 9 | 0 | 0 | 49 |
| 2004 | 0 | 32 | 5 | 0 | 0 | 37 |
| 2005 | 0 | 24 | 5 | 0 | 0 | 29 |
| 2006 | 1 | 51 | 13 | 0 | 0 | 65 |
| 2007 | 0 | 44 | 11 | 0 | 0 | 55 |
| 2008 | 1 | 14 | 5 | 0 | 0 | 20 |
| 2009 | 0 | 21 | 16 | 0 | 0 | 37 |
| 2010 | 0 | 17 | 12 | 0 | 0 | 29 |
| 2011 | 0 | 37 | 27 | 0 | 0 | 64 |
| 2012 | 1 | 76 | 18 | 0 | 0 | 95 |
| 2013 | 2 | 81 | 22 | 0 | 0 | 105 |
| 2014 | 4 | 90 | 27 | 0 | 0 | 121 |
| 2015 | 4 | 93 | 47 | 0 | 0 | 144 |
| 2016 | 0 | 93 | 38 | 0 | 0 | 131 |
| 2017 | 1 | 85 | 53 | 0 | 0 | 139 |
| 2018 | 0 | 76 | 32 | 0 | 0 | 108 |
| 2019 | 2 | 77 | 49 | 0 | 0 | 128 |
| 2020 | 7 | 100 | 41 | 0 | 0 | 148 |
| 2021 | 2 | 101 | 48 | 0 | 0 | 151 |
| 2022 | 4 | 94 | 48 | 0 | 0 | 146 |
| 2023 | 4 | 102 | 43 | 0 | 0 | 149 |
| 2024 | 3 | 125 | 67 | 0 | 1 | 196 |
| 2025 | 0 | 32 | 0 | 0 | 0 | 32 |
| 2026 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 55 | 1731 | 685 | 0 | 1 | 2472 |