*Excludes Observations that spanned multiple years
| B | b | t | W | w | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 1 | 0 | 1 | 0 | 1 | 3 |
| 1970 | 1 | 0 | 0 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1972 | 2 | 0 | 0 | 0 | 0 | 2 |
| 1973 | 2 | 0 | 1 | 0 | 0 | 3 |
| 1974 | 2 | 0 | 1 | 0 | 0 | 3 |
| 1975 | 3 | 0 | 4 | 0 | 0 | 7 |
| 1976 | 8 | 0 | 2 | 0 | 0 | 10 |
| 1977 | 1 | 0 | 6 | 0 | 1 | 8 |
| 1978 | 9 | 0 | 1 | 0 | 0 | 10 |
| 1979 | 11 | 0 | 7 | 0 | 0 | 18 |
| 1980 | 5 | 0 | 5 | 0 | 0 | 10 |
| 1981 | 2 | 0 | 18 | 0 | 1 | 21 |
| 1982 | 0 | 0 | 13 | 0 | 0 | 13 |
| 1983 | 0 | 0 | 8 | 0 | 0 | 8 |
| 1984 | 1 | 0 | 9 | 0 | 0 | 10 |
| 1985 | 1 | 0 | 4 | 0 | 0 | 5 |
| 1986 | 2 | 0 | 16 | 0 | 0 | 18 |
| 1987 | 7 | 0 | 10 | 0 | 1 | 18 |
| 1988 | 12 | 0 | 14 | 0 | 0 | 26 |
| 1989 | 3 | 0 | 12 | 0 | 1 | 16 |
| 1990 | 6 | 3 | 18 | 0 | 0 | 27 |
| 1991 | 8 | 0 | 22 | 0 | 0 | 30 |
| 1992 | 3 | 0 | 19 | 0 | 1 | 23 |
| 1993 | 4 | 2 | 37 | 0 | 0 | 43 |
| 1994 | 5 | 3 | 48 | 0 | 2 | 58 |
| 1995 | 9 | 0 | 55 | 0 | 0 | 64 |
| 1996 | 8 | 3 | 44 | 0 | 0 | 55 |
| 1997 | 7 | 5 | 55 | 0 | 2 | 69 |
| 1998 | 3 | 2 | 48 | 0 | 7 | 60 |
| 1999 | 6 | 3 | 44 | 0 | 4 | 57 |
| 2000 | 5 | 3 | 55 | 0 | 2 | 65 |
| 2001 | 10 | 2 | 54 | 0 | 1 | 67 |
| 2002 | 5 | 2 | 61 | 0 | 2 | 70 |
| 2003 | 3 | 2 | 108 | 0 | 1 | 114 |
| 2004 | 4 | 2 | 71 | 0 | 3 | 80 |
| 2005 | 5 | 2 | 118 | 0 | 1 | 126 |
| 2006 | 8 | 5 | 92 | 0 | 0 | 105 |
| 2007 | 5 | 3 | 107 | 0 | 0 | 115 |
| 2008 | 1 | 0 | 125 | 0 | 0 | 126 |
| 2009 | 19 | 2 | 210 | 0 | 2 | 233 |
| 2010 | 20 | 2 | 239 | 0 | 1 | 262 |
| 2011 | 18 | 7 | 284 | 0 | 0 | 309 |
| 2012 | 17 | 1 | 310 | 0 | 5 | 333 |
| 2013 | 18 | 1 | 315 | 0 | 4 | 338 |
| 2014 | 17 | 3 | 291 | 0 | 4 | 315 |
| 2015 | 13 | 1 | 382 | 0 | 7 | 403 |
| 2016 | 18 | 2 | 484 | 0 | 8 | 512 |
| 2017 | 16 | 2 | 598 | 0 | 5 | 621 |
| 2018 | 18 | 0 | 567 | 0 | 4 | 589 |
| 2019 | 8 | 3 | 595 | 0 | 7 | 613 |
| 2020 | 6 | 1 | 649 | 0 | 2 | 658 |
| 2021 | 2 | 3 | 664 | 0 | 4 | 673 |
| 2022 | 4 | 0 | 587 | 0 | 4 | 595 |
| 2023 | 1 | 1 | 15 | 0 | 0 | 17 |
| 2024 | 3 | 0 | 5 | 0 | 1 | 9 |
| Total | 376 | 71 | 7510 | 0 | 89 | 8046 |