

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 1 | 1 | 15 | 0 | 0 | 17 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1974 | 0 | 5 | 0 | 0 | 0 | 5 |
| 1975 | 2 | 3 | 1 | 0 | 0 | 6 |
| 1976 | 0 | 1 | 6 | 0 | 0 | 7 |
| 1977 | 1 | 14 | 14 | 0 | 0 | 29 |
| 1978 | 7 | 1 | 24 | 0 | 0 | 32 |
| 1979 | 7 | 40 | 33 | 0 | 0 | 80 |
| 1980 | 6 | 9 | 21 | 0 | 0 | 36 |
| 1981 | 11 | 6 | 16 | 0 | 0 | 33 |
| 1982 | 3 | 3 | 15 | 0 | 0 | 21 |
| 1983 | 56 | 29 | 30 | 0 | 0 | 115 |
| 1984 | 126 | 22 | 52 | 0 | 0 | 200 |
| 1985 | 5 | 7 | 12 | 0 | 0 | 24 |
| 1986 | 0 | 3 | 11 | 0 | 0 | 14 |
| 1987 | 18 | 13 | 14 | 0 | 0 | 45 |
| 1988 | 52 | 41 | 26 | 0 | 0 | 119 |
| 1989 | 1 | 2 | 8 | 0 | 0 | 11 |
| 1990 | 1 | 2 | 8 | 0 | 0 | 11 |
| 1991 | 1 | 14 | 66 | 0 | 0 | 81 |
| 1992 | 1 | 33 | 20 | 0 | 0 | 54 |
| 1993 | 32 | 28 | 65 | 0 | 0 | 125 |
| 1994 | 4 | 53 | 60 | 0 | 0 | 117 |
| 1995 | 4 | 6 | 13 | 0 | 0 | 23 |
| 1996 | 14 | 32 | 61 | 0 | 0 | 107 |
| 1997 | 7 | 84 | 62 | 0 | 0 | 153 |
| 1998 | 14 | 128 | 241 | 0 | 0 | 383 |
| 1999 | 46 | 138 | 106 | 0 | 0 | 290 |
| 2000 | 75 | 80 | 62 | 0 | 0 | 217 |
| 2001 | 6 | 37 | 20 | 0 | 0 | 63 |
| 2002 | 15 | 49 | 33 | 0 | 0 | 97 |
| 2003 | 39 | 16 | 37 | 0 | 0 | 92 |
| 2004 | 1 | 7 | 33 | 0 | 0 | 41 |
| 2005 | 2 | 12 | 17 | 0 | 0 | 31 |
| 2006 | 13 | 23 | 16 | 0 | 0 | 52 |
| 2007 | 8 | 13 | 15 | 0 | 0 | 36 |
| 2008 | 26 | 30 | 21 | 0 | 0 | 77 |
| 2009 | 19 | 31 | 28 | 0 | 0 | 78 |
| 2010 | 27 | 43 | 29 | 0 | 0 | 99 |
| 2011 | 36 | 77 | 23 | 0 | 0 | 136 |
| 2012 | 6 | 60 | 20 | 0 | 0 | 86 |
| 2013 | 10 | 27 | 15 | 0 | 0 | 52 |
| 2014 | 6 | 28 | 16 | 0 | 0 | 50 |
| 2015 | 12 | 92 | 30 | 0 | 0 | 134 |
| 2016 | 6 | 36 | 55 | 0 | 0 | 97 |
| 2017 | 16 | 63 | 46 | 0 | 0 | 125 |
| 2018 | 13 | 47 | 46 | 0 | 0 | 106 |
| 2019 | 6 | 63 | 25 | 0 | 0 | 94 |
| 2020 | 8 | 55 | 36 | 0 | 0 | 99 |
| 2021 | 10 | 82 | 34 | 0 | 0 | 126 |
| 2022 | 12 | 94 | 52 | 0 | 0 | 158 |
| 2023 | 9 | 106 | 68 | 0 | 0 | 183 |
| 2024 | 26 | 126 | 74 | 0 | 0 | 226 |
| 2025 | 0 | 6 | 23 | 0 | 0 | 29 |
| Total | 827 | 2021 | 1874 | 0 | 0 | 4722 |