

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 3 | 7 | 0 | 0 | 12 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1974 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1975 | 0 | 8 | 4 | 0 | 0 | 12 |
| 1976 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1977 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1978 | 1 | 0 | 3 | 0 | 0 | 4 |
| 1979 | 0 | 3 | 6 | 0 | 0 | 9 |
| 1980 | 0 | 5 | 3 | 0 | 0 | 8 |
| 1981 | 1 | 0 | 3 | 0 | 0 | 4 |
| 1982 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1983 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1984 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1985 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1986 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1987 | 0 | 2 | 9 | 0 | 0 | 11 |
| 1988 | 0 | 8 | 4 | 0 | 0 | 12 |
| 1989 | 1 | 3 | 9 | 0 | 0 | 13 |
| 1990 | 8 | 17 | 9 | 0 | 0 | 34 |
| 1991 | 1 | 11 | 21 | 0 | 0 | 33 |
| 1992 | 1 | 3 | 10 | 0 | 0 | 14 |
| 1993 | 2 | 16 | 10 | 0 | 0 | 28 |
| 1994 | 1 | 50 | 14 | 0 | 0 | 65 |
| 1995 | 5 | 32 | 12 | 0 | 0 | 49 |
| 1996 | 8 | 35 | 16 | 0 | 0 | 59 |
| 1997 | 3 | 142 | 26 | 0 | 0 | 171 |
| 1998 | 1 | 84 | 22 | 0 | 0 | 107 |
| 1999 | 2 | 103 | 36 | 0 | 0 | 141 |
| 2000 | 3 | 74 | 51 | 0 | 0 | 128 |
| 2001 | 5 | 150 | 18 | 0 | 0 | 173 |
| 2002 | 0 | 143 | 53 | 0 | 0 | 196 |
| 2003 | 2 | 247 | 48 | 0 | 0 | 297 |
| 2004 | 3 | 205 | 49 | 0 | 0 | 257 |
| 2005 | 8 | 213 | 216 | 0 | 0 | 437 |
| 2006 | 6 | 185 | 43 | 0 | 0 | 234 |
| 2007 | 1 | 152 | 40 | 0 | 0 | 193 |
| 2008 | 5 | 154 | 63 | 0 | 0 | 222 |
| 2009 | 7 | 73 | 88 | 0 | 0 | 168 |
| 2010 | 9 | 209 | 149 | 0 | 0 | 367 |
| 2011 | 0 | 127 | 139 | 0 | 0 | 266 |
| 2012 | 10 | 369 | 171 | 0 | 0 | 550 |
| 2013 | 8 | 228 | 94 | 0 | 0 | 330 |
| 2014 | 7 | 309 | 93 | 0 | 1 | 410 |
| 2015 | 10 | 694 | 234 | 0 | 0 | 938 |
| 2016 | 12 | 383 | 215 | 0 | 0 | 610 |
| 2017 | 11 | 616 | 318 | 0 | 0 | 945 |
| 2018 | 14 | 791 | 276 | 0 | 0 | 1081 |
| 2019 | 13 | 580 | 239 | 0 | 0 | 832 |
| 2020 | 8 | 556 | 226 | 0 | 0 | 790 |
| 2021 | 16 | 564 | 215 | 0 | 0 | 795 |
| 2022 | 18 | 587 | 277 | 0 | 0 | 882 |
| 2023 | 13 | 719 | 198 | 0 | 0 | 930 |
| 2024 | 19 | 684 | 226 | 0 | 0 | 929 |
| 2025 | 1 | 61 | 41 | 0 | 0 | 103 |
| Total | 246 | 9602 | 4034 | 0 | 1 | 13883 |