

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 3 | 10 | 0 | 95 | 108 |
| 1970 | 0 | 0 | 3 | 0 | 4 | 7 |
| 1971 | 0 | 2 | 1 | 0 | 9 | 12 |
| 1972 | 0 | 0 | 1 | 0 | 7 | 8 |
| 1973 | 0 | 1 | 2 | 0 | 8 | 11 |
| 1974 | 0 | 0 | 7 | 0 | 6 | 13 |
| 1975 | 0 | 2 | 1 | 0 | 8 | 11 |
| 1976 | 0 | 1 | 2 | 0 | 11 | 14 |
| 1977 | 0 | 0 | 6 | 0 | 13 | 19 |
| 1978 | 0 | 0 | 2 | 0 | 9 | 11 |
| 1979 | 0 | 0 | 1 | 0 | 15 | 16 |
| 1980 | 0 | 0 | 7 | 0 | 15 | 22 |
| 1981 | 0 | 0 | 4 | 0 | 13 | 17 |
| 1982 | 0 | 1 | 7 | 0 | 17 | 25 |
| 1983 | 0 | 1 | 4 | 0 | 17 | 22 |
| 1984 | 0 | 2 | 2 | 0 | 17 | 21 |
| 1985 | 0 | 0 | 5 | 1 | 14 | 20 |
| 1986 | 0 | 0 | 7 | 0 | 18 | 25 |
| 1987 | 0 | 3 | 9 | 0 | 18 | 30 |
| 1988 | 0 | 5 | 15 | 0 | 21 | 41 |
| 1989 | 1 | 6 | 19 | 0 | 19 | 45 |
| 1990 | 2 | 5 | 10 | 0 | 21 | 38 |
| 1991 | 8 | 18 | 25 | 0 | 15 | 66 |
| 1992 | 5 | 10 | 29 | 1 | 16 | 61 |
| 1993 | 10 | 38 | 68 | 1 | 24 | 141 |
| 1994 | 4 | 63 | 178 | 0 | 22 | 267 |
| 1995 | 7 | 54 | 146 | 3 | 21 | 231 |
| 1996 | 1 | 81 | 199 | 0 | 16 | 297 |
| 1997 | 2 | 61 | 59 | 0 | 25 | 147 |
| 1998 | 2 | 20 | 148 | 0 | 20 | 190 |
| 1999 | 0 | 26 | 22 | 0 | 19 | 67 |
| 2000 | 4 | 22 | 195 | 0 | 27 | 248 |
| 2001 | 7 | 11 | 171 | 0 | 27 | 216 |
| 2002 | 2 | 11 | 283 | 2 | 15 | 313 |
| 2003 | 5 | 29 | 268 | 2 | 20 | 324 |
| 2004 | 2 | 18 | 223 | 0 | 27 | 270 |
| 2005 | 20 | 40 | 81 | 2 | 32 | 175 |
| 2006 | 3 | 14 | 190 | 1 | 32 | 240 |
| 2007 | 7 | 40 | 341 | 1 | 33 | 422 |
| 2008 | 2 | 64 | 147 | 1 | 24 | 238 |
| 2009 | 1 | 34 | 109 | 0 | 36 | 180 |
| 2010 | 2 | 141 | 138 | 0 | 45 | 326 |
| 2011 | 2 | 86 | 134 | 0 | 57 | 279 |
| 2012 | 10 | 158 | 187 | 2 | 61 | 418 |
| 2013 | 5 | 234 | 285 | 0 | 63 | 587 |
| 2014 | 5 | 331 | 278 | 2 | 97 | 713 |
| 2015 | 5 | 293 | 348 | 3 | 146 | 795 |
| 2016 | 11 | 285 | 347 | 3 | 152 | 798 |
| 2017 | 14 | 309 | 433 | 0 | 132 | 888 |
| 2018 | 8 | 289 | 396 | 1 | 133 | 827 |
| 2019 | 21 | 325 | 516 | 4 | 134 | 1000 |
| 2020 | 7 | 446 | 791 | 1 | 189 | 1434 |
| 2021 | 13 | 432 | 680 | 0 | 235 | 1360 |
| 2022 | 15 | 407 | 884 | 1 | 195 | 1502 |
| 2023 | 14 | 742 | 721 | 0 | 213 | 1690 |
| 2024 | 26 | 763 | 890 | 0 | 273 | 1952 |
| 2025 | 2 | 0 | 16 | 0 | 3 | 21 |
| Total | 255 | 5927 | 10051 | 32 | 2954 | 19219 |