

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 3 | 0 | 4 | 7 |
| 1970 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 2 | 0 | 2 | 4 |
| 1974 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1975 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1976 | 0 | 1 | 0 | 0 | 2 | 3 |
| 1977 | 0 | 0 | 7 | 0 | 2 | 9 |
| 1978 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1979 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1980 | 0 | 0 | 7 | 0 | 0 | 7 |
| 1981 | 0 | 0 | 10 | 0 | 2 | 12 |
| 1982 | 0 | 0 | 2 | 0 | 3 | 5 |
| 1983 | 0 | 0 | 5 | 0 | 2 | 7 |
| 1984 | 0 | 0 | 3 | 0 | 1 | 4 |
| 1985 | 0 | 0 | 6 | 0 | 1 | 7 |
| 1986 | 0 | 0 | 12 | 0 | 2 | 14 |
| 1987 | 4 | 1 | 7 | 0 | 3 | 15 |
| 1988 | 1 | 4 | 7 | 0 | 5 | 17 |
| 1989 | 1 | 1 | 7 | 0 | 3 | 12 |
| 1990 | 2 | 4 | 8 | 0 | 2 | 16 |
| 1991 | 5 | 6 | 15 | 0 | 2 | 28 |
| 1992 | 0 | 4 | 20 | 0 | 4 | 28 |
| 1993 | 3 | 1 | 21 | 0 | 2 | 27 |
| 1994 | 1 | 10 | 23 | 0 | 9 | 43 |
| 1995 | 4 | 4 | 24 | 0 | 3 | 35 |
| 1996 | 3 | 3 | 27 | 0 | 2 | 35 |
| 1997 | 0 | 2 | 23 | 0 | 7 | 32 |
| 1998 | 4 | 7 | 25 | 0 | 5 | 41 |
| 1999 | 0 | 3 | 24 | 0 | 12 | 39 |
| 2000 | 3 | 2 | 32 | 0 | 12 | 49 |
| 2001 | 6 | 3 | 20 | 0 | 8 | 37 |
| 2002 | 0 | 2 | 35 | 0 | 3 | 40 |
| 2003 | 4 | 4 | 35 | 0 | 8 | 51 |
| 2004 | 0 | 3 | 34 | 0 | 5 | 42 |
| 2005 | 2 | 11 | 39 | 0 | 6 | 58 |
| 2006 | 0 | 8 | 47 | 0 | 8 | 63 |
| 2007 | 0 | 0 | 52 | 0 | 8 | 60 |
| 2008 | 0 | 2 | 56 | 0 | 5 | 63 |
| 2009 | 3 | 0 | 73 | 0 | 7 | 83 |
| 2010 | 0 | 2 | 81 | 0 | 5 | 88 |
| 2011 | 0 | 0 | 126 | 0 | 9 | 135 |
| 2012 | 6 | 3 | 131 | 0 | 12 | 152 |
| 2013 | 3 | 0 | 136 | 0 | 6 | 145 |
| 2014 | 4 | 1 | 133 | 0 | 15 | 153 |
| 2015 | 6 | 4 | 174 | 0 | 19 | 203 |
| 2016 | 12 | 1 | 261 | 0 | 23 | 297 |
| 2017 | 14 | 3 | 250 | 0 | 14 | 281 |
| 2018 | 13 | 1 | 322 | 0 | 8 | 344 |
| 2019 | 11 | 2 | 292 | 0 | 10 | 315 |
| 2020 | 4 | 8 | 321 | 0 | 6 | 339 |
| 2021 | 2 | 3 | 303 | 0 | 12 | 320 |
| 2022 | 0 | 0 | 335 | 0 | 17 | 352 |
| 2023 | 14 | 1 | 332 | 0 | 8 | 355 |
| 2024 | 15 | 2 | 344 | 0 | 13 | 374 |
| 2025 | 0 | 0 | 16 | 0 | 0 | 16 |
| Total | 150 | 117 | 4271 | 0 | 331 | 4869 |