

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 4 | 0 | 14 | 0 | 0 | 18 |
| 1970 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1971 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1974 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1975 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1976 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1977 | 0 | 0 | 9 | 0 | 0 | 9 |
| 1978 | 1 | 0 | 5 | 0 | 0 | 6 |
| 1979 | 2 | 0 | 5 | 0 | 0 | 7 |
| 1980 | 8 | 0 | 4 | 0 | 0 | 12 |
| 1981 | 11 | 0 | 15 | 0 | 0 | 26 |
| 1982 | 17 | 4 | 14 | 0 | 0 | 35 |
| 1983 | 24 | 4 | 2 | 0 | 0 | 30 |
| 1984 | 4 | 2 | 4 | 0 | 0 | 10 |
| 1985 | 1 | 0 | 2 | 0 | 0 | 3 |
| 1986 | 1 | 1 | 12 | 0 | 0 | 14 |
| 1987 | 1 | 2 | 12 | 0 | 0 | 15 |
| 1988 | 4 | 0 | 24 | 0 | 0 | 28 |
| 1989 | 3 | 3 | 18 | 0 | 0 | 24 |
| 1990 | 7 | 6 | 28 | 0 | 0 | 41 |
| 1991 | 7 | 3 | 33 | 0 | 0 | 43 |
| 1992 | 1 | 7 | 21 | 0 | 0 | 29 |
| 1993 | 4 | 6 | 40 | 0 | 0 | 50 |
| 1994 | 5 | 52 | 41 | 0 | 0 | 98 |
| 1995 | 7 | 14 | 51 | 0 | 0 | 72 |
| 1996 | 5 | 20 | 24 | 0 | 0 | 49 |
| 1997 | 7 | 25 | 84 | 0 | 1 | 117 |
| 1998 | 5 | 25 | 72 | 0 | 0 | 102 |
| 1999 | 5 | 6 | 32 | 0 | 0 | 43 |
| 2000 | 10 | 40 | 71 | 0 | 0 | 121 |
| 2001 | 14 | 3 | 74 | 0 | 0 | 91 |
| 2002 | 4 | 1 | 95 | 0 | 1 | 101 |
| 2003 | 7 | 3 | 102 | 0 | 0 | 112 |
| 2004 | 2 | 4 | 96 | 0 | 0 | 102 |
| 2005 | 8 | 2 | 103 | 0 | 0 | 113 |
| 2006 | 17 | 4 | 73 | 0 | 0 | 94 |
| 2007 | 10 | 6 | 111 | 0 | 0 | 127 |
| 2008 | 3 | 2 | 118 | 0 | 0 | 123 |
| 2009 | 5 | 14 | 130 | 0 | 0 | 149 |
| 2010 | 16 | 0 | 128 | 0 | 0 | 144 |
| 2011 | 11 | 3 | 145 | 0 | 0 | 159 |
| 2012 | 8 | 7 | 185 | 0 | 0 | 200 |
| 2013 | 10 | 2 | 225 | 0 | 0 | 237 |
| 2014 | 8 | 6 | 288 | 0 | 0 | 302 |
| 2015 | 27 | 11 | 483 | 0 | 0 | 521 |
| 2016 | 28 | 7 | 582 | 0 | 0 | 617 |
| 2017 | 15 | 15 | 767 | 0 | 1 | 798 |
| 2018 | 5 | 15 | 650 | 0 | 0 | 670 |
| 2019 | 17 | 9 | 786 | 0 | 0 | 812 |
| 2020 | 12 | 8 | 717 | 0 | 0 | 737 |
| 2021 | 13 | 8 | 806 | 0 | 0 | 827 |
| 2022 | 7 | 3 | 906 | 0 | 0 | 916 |
| 2023 | 9 | 6 | 1019 | 0 | 0 | 1034 |
| 2024 | 17 | 13 | 990 | 0 | 0 | 1020 |
| 2025 | 0 | 1 | 12 | 0 | 0 | 13 |
| Total | 417 | 374 | 10242 | 0 | 3 | 11036 |