

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 3 | 0 | 25 | 0 | 93 | 121 |
| 1970 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1971 | 0 | 0 | 0 | 0 | 8 | 8 |
| 1972 | 0 | 0 | 0 | 0 | 5 | 5 |
| 1973 | 0 | 1 | 2 | 0 | 6 | 9 |
| 1974 | 0 | 4 | 5 | 0 | 6 | 15 |
| 1975 | 1 | 0 | 2 | 0 | 7 | 10 |
| 1976 | 0 | 1 | 1 | 0 | 8 | 10 |
| 1977 | 0 | 1 | 1 | 0 | 8 | 10 |
| 1978 | 0 | 0 | 1 | 0 | 8 | 9 |
| 1979 | 0 | 2 | 3 | 0 | 8 | 13 |
| 1980 | 0 | 1 | 0 | 0 | 9 | 10 |
| 1981 | 0 | 0 | 1 | 0 | 12 | 13 |
| 1982 | 0 | 2 | 1 | 0 | 12 | 15 |
| 1983 | 0 | 1 | 2 | 0 | 11 | 14 |
| 1984 | 0 | 0 | 2 | 0 | 13 | 15 |
| 1985 | 0 | 1 | 3 | 0 | 13 | 17 |
| 1986 | 1 | 3 | 6 | 0 | 15 | 25 |
| 1987 | 0 | 0 | 7 | 0 | 17 | 24 |
| 1988 | 1 | 4 | 5 | 0 | 17 | 27 |
| 1989 | 1 | 6 | 6 | 0 | 16 | 29 |
| 1990 | 4 | 2 | 9 | 0 | 16 | 31 |
| 1991 | 7 | 5 | 24 | 1 | 14 | 51 |
| 1992 | 6 | 7 | 21 | 0 | 11 | 45 |
| 1993 | 9 | 9 | 26 | 0 | 20 | 64 |
| 1994 | 5 | 37 | 19 | 0 | 22 | 83 |
| 1995 | 5 | 22 | 15 | 0 | 21 | 63 |
| 1996 | 5 | 20 | 14 | 0 | 11 | 50 |
| 1997 | 12 | 15 | 19 | 0 | 22 | 68 |
| 1998 | 3 | 20 | 24 | 0 | 16 | 63 |
| 1999 | 4 | 9 | 18 | 0 | 18 | 49 |
| 2000 | 7 | 34 | 123 | 0 | 25 | 189 |
| 2001 | 3 | 10 | 33 | 0 | 28 | 74 |
| 2002 | 3 | 13 | 52 | 0 | 23 | 91 |
| 2003 | 1 | 19 | 59 | 0 | 24 | 103 |
| 2004 | 5 | 21 | 99 | 0 | 22 | 147 |
| 2005 | 1 | 21 | 102 | 0 | 26 | 150 |
| 2006 | 1 | 15 | 113 | 0 | 31 | 160 |
| 2007 | 3 | 14 | 84 | 6 | 27 | 134 |
| 2008 | 3 | 13 | 57 | 4 | 17 | 94 |
| 2009 | 6 | 7 | 56 | 0 | 25 | 94 |
| 2010 | 0 | 15 | 84 | 0 | 26 | 125 |
| 2011 | 1 | 12 | 81 | 0 | 42 | 136 |
| 2012 | 8 | 45 | 102 | 0 | 55 | 210 |
| 2013 | 14 | 58 | 142 | 1 | 34 | 249 |
| 2014 | 23 | 56 | 136 | 0 | 49 | 264 |
| 2015 | 30 | 108 | 224 | 1 | 76 | 439 |
| 2016 | 15 | 106 | 201 | 0 | 104 | 426 |
| 2017 | 24 | 144 | 234 | 0 | 80 | 482 |
| 2018 | 22 | 119 | 228 | 1 | 94 | 464 |
| 2019 | 50 | 111 | 247 | 1 | 75 | 484 |
| 2020 | 24 | 124 | 332 | 0 | 87 | 567 |
| 2021 | 21 | 151 | 327 | 0 | 93 | 592 |
| 2022 | 17 | 195 | 360 | 0 | 94 | 666 |
| 2023 | 27 | 217 | 290 | 0 | 118 | 652 |
| 2024 | 37 | 247 | 362 | 0 | 121 | 767 |
| 2025 | 0 | 5 | 26 | 0 | 0 | 31 |
| Total | 413 | 2053 | 4416 | 15 | 1862 | 8759 |