

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 2 | 18 | 0 | 50 | 72 |
| 1970 | 0 | 3 | 11 | 0 | 2 | 16 |
| 1971 | 0 | 1 | 5 | 0 | 1 | 7 |
| 1972 | 0 | 0 | 2 | 0 | 3 | 5 |
| 1973 | 1 | 0 | 7 | 0 | 3 | 11 |
| 1974 | 0 | 2 | 6 | 0 | 3 | 11 |
| 1975 | 0 | 1 | 0 | 0 | 5 | 6 |
| 1976 | 0 | 2 | 1 | 0 | 5 | 8 |
| 1977 | 1 | 2 | 3 | 0 | 4 | 10 |
| 1978 | 0 | 0 | 2 | 0 | 6 | 8 |
| 1979 | 0 | 1 | 1 | 0 | 8 | 10 |
| 1980 | 0 | 1 | 0 | 0 | 5 | 6 |
| 1981 | 0 | 0 | 11 | 0 | 5 | 16 |
| 1982 | 0 | 1 | 4 | 0 | 7 | 12 |
| 1983 | 0 | 0 | 2 | 0 | 8 | 10 |
| 1984 | 0 | 0 | 2 | 0 | 5 | 7 |
| 1985 | 0 | 2 | 1 | 0 | 9 | 12 |
| 1986 | 0 | 0 | 2 | 0 | 8 | 10 |
| 1987 | 0 | 2 | 9 | 0 | 6 | 17 |
| 1988 | 4 | 3 | 33 | 0 | 10 | 50 |
| 1989 | 0 | 6 | 23 | 0 | 10 | 39 |
| 1990 | 0 | 5 | 32 | 0 | 7 | 44 |
| 1991 | 2 | 12 | 26 | 0 | 11 | 51 |
| 1992 | 3 | 8 | 28 | 0 | 6 | 45 |
| 1993 | 5 | 11 | 39 | 0 | 10 | 65 |
| 1994 | 6 | 61 | 118 | 0 | 12 | 197 |
| 1995 | 2 | 30 | 206 | 1 | 10 | 249 |
| 1996 | 2 | 36 | 234 | 0 | 7 | 279 |
| 1997 | 6 | 67 | 62 | 0 | 14 | 149 |
| 1998 | 4 | 7 | 146 | 0 | 10 | 167 |
| 1999 | 2 | 24 | 41 | 0 | 15 | 82 |
| 2000 | 4 | 21 | 154 | 0 | 20 | 199 |
| 2001 | 8 | 7 | 85 | 0 | 14 | 114 |
| 2002 | 2 | 3 | 172 | 0 | 15 | 192 |
| 2003 | 3 | 11 | 82 | 0 | 19 | 115 |
| 2004 | 1 | 13 | 164 | 0 | 16 | 194 |
| 2005 | 2 | 15 | 69 | 0 | 14 | 100 |
| 2006 | 2 | 15 | 95 | 0 | 14 | 126 |
| 2007 | 4 | 10 | 97 | 0 | 13 | 124 |
| 2008 | 2 | 33 | 77 | 2 | 10 | 124 |
| 2009 | 3 | 11 | 42 | 0 | 17 | 73 |
| 2010 | 2 | 47 | 60 | 0 | 8 | 117 |
| 2011 | 4 | 42 | 51 | 0 | 16 | 113 |
| 2012 | 2 | 72 | 58 | 1 | 21 | 154 |
| 2013 | 5 | 99 | 72 | 0 | 20 | 196 |
| 2014 | 7 | 112 | 123 | 0 | 24 | 266 |
| 2015 | 8 | 135 | 130 | 0 | 41 | 314 |
| 2016 | 4 | 175 | 150 | 0 | 34 | 363 |
| 2017 | 9 | 196 | 156 | 0 | 37 | 398 |
| 2018 | 5 | 200 | 113 | 0 | 32 | 350 |
| 2019 | 13 | 177 | 132 | 0 | 17 | 339 |
| 2020 | 11 | 256 | 189 | 0 | 27 | 483 |
| 2021 | 15 | 237 | 211 | 0 | 25 | 488 |
| 2022 | 8 | 265 | 297 | 0 | 42 | 612 |
| 2023 | 7 | 320 | 238 | 0 | 47 | 612 |
| 2024 | 16 | 325 | 272 | 0 | 34 | 647 |
| 2025 | 0 | 0 | 15 | 0 | 1 | 16 |
| Total | 187 | 3087 | 4379 | 4 | 843 | 8500 |