

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 7 | 0 | 0 | 8 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1973 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1974 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1975 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1976 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1977 | 0 | 0 | 7 | 0 | 0 | 7 |
| 1978 | 1 | 0 | 2 | 0 | 0 | 3 |
| 1979 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1980 | 0 | 0 | 7 | 0 | 0 | 7 |
| 1981 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1982 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1983 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1984 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1985 | 0 | 2 | 10 | 0 | 0 | 12 |
| 1986 | 1 | 2 | 17 | 0 | 0 | 20 |
| 1987 | 1 | 1 | 13 | 0 | 0 | 15 |
| 1988 | 0 | 0 | 7 | 0 | 0 | 7 |
| 1989 | 0 | 8 | 5 | 0 | 0 | 13 |
| 1990 | 0 | 6 | 10 | 0 | 0 | 16 |
| 1991 | 1 | 10 | 27 | 0 | 0 | 38 |
| 1992 | 3 | 1 | 27 | 0 | 0 | 31 |
| 1993 | 4 | 11 | 41 | 0 | 3 | 59 |
| 1994 | 4 | 21 | 68 | 0 | 2 | 95 |
| 1995 | 4 | 10 | 95 | 0 | 1 | 110 |
| 1996 | 3 | 10 | 70 | 0 | 0 | 83 |
| 1997 | 5 | 10 | 117 | 0 | 3 | 135 |
| 1998 | 2 | 19 | 98 | 0 | 0 | 119 |
| 1999 | 8 | 4 | 45 | 0 | 2 | 59 |
| 2000 | 3 | 15 | 96 | 0 | 1 | 115 |
| 2001 | 6 | 5 | 112 | 0 | 3 | 126 |
| 2002 | 0 | 2 | 116 | 0 | 0 | 118 |
| 2003 | 8 | 3 | 137 | 0 | 3 | 151 |
| 2004 | 2 | 9 | 135 | 0 | 1 | 147 |
| 2005 | 3 | 3 | 144 | 0 | 0 | 150 |
| 2006 | 2 | 11 | 164 | 0 | 1 | 178 |
| 2007 | 8 | 8 | 130 | 0 | 2 | 148 |
| 2008 | 6 | 14 | 141 | 0 | 0 | 161 |
| 2009 | 7 | 4 | 231 | 0 | 0 | 242 |
| 2010 | 6 | 9 | 285 | 0 | 0 | 300 |
| 2011 | 4 | 16 | 320 | 0 | 0 | 340 |
| 2012 | 10 | 20 | 417 | 0 | 1 | 448 |
| 2013 | 18 | 25 | 497 | 0 | 1 | 541 |
| 2014 | 21 | 39 | 515 | 0 | 1 | 576 |
| 2015 | 24 | 25 | 700 | 0 | 2 | 751 |
| 2016 | 15 | 21 | 878 | 0 | 3 | 917 |
| 2017 | 35 | 38 | 1088 | 0 | 6 | 1167 |
| 2018 | 29 | 83 | 1181 | 0 | 5 | 1298 |
| 2019 | 26 | 50 | 1274 | 0 | 0 | 1350 |
| 2020 | 24 | 45 | 1510 | 0 | 1 | 1580 |
| 2021 | 28 | 36 | 1598 | 0 | 4 | 1666 |
| 2022 | 28 | 49 | 1908 | 0 | 1 | 1986 |
| 2023 | 31 | 33 | 1683 | 0 | 5 | 1752 |
| 2024 | 54 | 50 | 1959 | 0 | 5 | 2068 |
| 2025 | 1 | 23 | 44 | 0 | 0 | 68 |
| Total | 436 | 752 | 17965 | 0 | 57 | 19210 |