

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 13 | 0 | 23 | 36 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1972 | 0 | 0 | 1 | 0 | 3 | 4 |
| 1973 | 0 | 0 | 2 | 0 | 2 | 4 |
| 1974 | 0 | 1 | 1 | 0 | 3 | 5 |
| 1975 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1976 | 0 | 0 | 4 | 0 | 2 | 6 |
| 1977 | 0 | 0 | 4 | 0 | 6 | 10 |
| 1978 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1979 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1980 | 0 | 0 | 1 | 0 | 5 | 6 |
| 1981 | 0 | 0 | 2 | 0 | 6 | 8 |
| 1982 | 0 | 0 | 3 | 0 | 7 | 10 |
| 1983 | 0 | 0 | 3 | 0 | 3 | 6 |
| 1984 | 0 | 0 | 3 | 0 | 5 | 8 |
| 1985 | 0 | 1 | 5 | 1 | 4 | 11 |
| 1986 | 0 | 0 | 7 | 0 | 5 | 12 |
| 1987 | 0 | 2 | 10 | 0 | 5 | 17 |
| 1988 | 0 | 0 | 16 | 0 | 3 | 19 |
| 1989 | 0 | 2 | 13 | 0 | 7 | 22 |
| 1990 | 0 | 8 | 8 | 0 | 6 | 22 |
| 1991 | 1 | 10 | 15 | 1 | 6 | 33 |
| 1992 | 1 | 42 | 12 | 1 | 4 | 60 |
| 1993 | 1 | 78 | 33 | 0 | 9 | 121 |
| 1994 | 3 | 327 | 55 | 0 | 11 | 396 |
| 1995 | 3 | 272 | 50 | 3 | 9 | 337 |
| 1996 | 0 | 302 | 49 | 0 | 7 | 358 |
| 1997 | 0 | 69 | 65 | 0 | 9 | 143 |
| 1998 | 1 | 285 | 15 | 0 | 8 | 309 |
| 1999 | 0 | 17 | 11 | 0 | 8 | 36 |
| 2000 | 0 | 199 | 23 | 0 | 14 | 236 |
| 2001 | 2 | 133 | 27 | 0 | 15 | 177 |
| 2002 | 1 | 171 | 27 | 2 | 14 | 215 |
| 2003 | 0 | 118 | 25 | 1 | 11 | 155 |
| 2004 | 0 | 183 | 24 | 0 | 10 | 217 |
| 2005 | 0 | 33 | 44 | 1 | 14 | 92 |
| 2006 | 1 | 98 | 34 | 1 | 14 | 148 |
| 2007 | 1 | 177 | 49 | 0 | 11 | 238 |
| 2008 | 0 | 62 | 47 | 2 | 4 | 115 |
| 2009 | 0 | 5 | 50 | 0 | 18 | 73 |
| 2010 | 1 | 43 | 110 | 0 | 13 | 167 |
| 2011 | 0 | 0 | 123 | 0 | 13 | 136 |
| 2012 | 3 | 5 | 161 | 0 | 22 | 191 |
| 2013 | 2 | 4 | 259 | 0 | 18 | 283 |
| 2014 | 2 | 6 | 249 | 0 | 26 | 283 |
| 2015 | 1 | 5 | 359 | 1 | 52 | 418 |
| 2016 | 0 | 3 | 351 | 0 | 39 | 393 |
| 2017 | 0 | 3 | 395 | 0 | 45 | 443 |
| 2018 | 2 | 1 | 397 | 1 | 41 | 442 |
| 2019 | 7 | 4 | 380 | 0 | 31 | 422 |
| 2020 | 4 | 0 | 524 | 0 | 36 | 564 |
| 2021 | 1 | 2 | 509 | 0 | 43 | 555 |
| 2022 | 2 | 2 | 506 | 0 | 61 | 571 |
| 2023 | 5 | 2 | 562 | 0 | 66 | 635 |
| 2024 | 8 | 3 | 559 | 0 | 42 | 612 |
| 2025 | 0 | 0 | 10 | 0 | 0 | 10 |
| Total | 53 | 2678 | 6207 | 15 | 851 | 9804 |