

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 10 | 0 | 2 | 12 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 2 | 0 | 2 | 4 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1974 | 0 | 4 | 0 | 0 | 0 | 4 |
| 1975 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1976 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1977 | 0 | 1 | 10 | 0 | 1 | 12 |
| 1978 | 0 | 2 | 3 | 0 | 1 | 6 |
| 1979 | 0 | 1 | 7 | 0 | 0 | 8 |
| 1980 | 0 | 0 | 4 | 0 | 3 | 7 |
| 1981 | 0 | 0 | 5 | 0 | 1 | 6 |
| 1982 | 0 | 0 | 6 | 0 | 0 | 6 |
| 1983 | 0 | 1 | 9 | 0 | 1 | 11 |
| 1984 | 0 | 0 | 3 | 0 | 1 | 4 |
| 1985 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1986 | 1 | 4 | 13 | 0 | 0 | 18 |
| 1987 | 1 | 3 | 8 | 0 | 2 | 14 |
| 1988 | 1 | 2 | 9 | 0 | 4 | 16 |
| 1989 | 1 | 4 | 16 | 0 | 3 | 24 |
| 1990 | 0 | 7 | 14 | 0 | 1 | 22 |
| 1991 | 2 | 7 | 20 | 0 | 0 | 29 |
| 1992 | 0 | 4 | 24 | 0 | 4 | 32 |
| 1993 | 5 | 7 | 23 | 0 | 0 | 35 |
| 1994 | 4 | 16 | 27 | 0 | 2 | 49 |
| 1995 | 1 | 1 | 31 | 0 | 1 | 34 |
| 1996 | 3 | 8 | 35 | 0 | 0 | 46 |
| 1997 | 2 | 5 | 38 | 0 | 8 | 53 |
| 1998 | 1 | 10 | 34 | 0 | 6 | 51 |
| 1999 | 0 | 4 | 34 | 0 | 4 | 42 |
| 2000 | 2 | 5 | 30 | 0 | 4 | 41 |
| 2001 | 2 | 5 | 31 | 0 | 6 | 44 |
| 2002 | 1 | 1 | 47 | 0 | 2 | 51 |
| 2003 | 2 | 3 | 61 | 0 | 2 | 68 |
| 2004 | 0 | 5 | 45 | 0 | 2 | 52 |
| 2005 | 0 | 8 | 71 | 0 | 2 | 81 |
| 2006 | 1 | 4 | 75 | 0 | 1 | 81 |
| 2007 | 0 | 2 | 76 | 0 | 1 | 79 |
| 2008 | 0 | 1 | 94 | 0 | 1 | 96 |
| 2009 | 3 | 1 | 181 | 0 | 0 | 185 |
| 2010 | 2 | 0 | 198 | 0 | 3 | 203 |
| 2011 | 1 | 3 | 255 | 0 | 4 | 263 |
| 2012 | 3 | 7 | 365 | 0 | 12 | 387 |
| 2013 | 1 | 2 | 283 | 0 | 2 | 288 |
| 2014 | 3 | 1 | 194 | 0 | 6 | 204 |
| 2015 | 6 | 2 | 266 | 0 | 8 | 282 |
| 2016 | 2 | 2 | 351 | 0 | 13 | 368 |
| 2017 | 10 | 5 | 404 | 0 | 9 | 428 |
| 2018 | 5 | 6 | 450 | 0 | 4 | 465 |
| 2019 | 8 | 3 | 523 | 0 | 2 | 536 |
| 2020 | 7 | 2 | 583 | 0 | 9 | 601 |
| 2021 | 1 | 3 | 481 | 0 | 18 | 503 |
| 2022 | 4 | 1 | 608 | 0 | 9 | 622 |
| 2023 | 15 | 11 | 505 | 0 | 8 | 539 |
| 2024 | 13 | 9 | 585 | 0 | 21 | 628 |
| 2025 | 0 | 0 | 15 | 0 | 0 | 15 |
| Total | 114 | 186 | 7171 | 0 | 196 | 7667 |