*Excludes Observations that spanned multiple years
| B | b | t | W | w | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 5 | 0 | 17 | 22 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1972 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1973 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1974 | 0 | 1 | 1 | 0 | 2 | 4 |
| 1975 | 0 | 0 | 2 | 0 | 4 | 6 |
| 1976 | 0 | 3 | 0 | 0 | 3 | 6 |
| 1977 | 0 | 1 | 4 | 0 | 4 | 9 |
| 1978 | 0 | 0 | 4 | 0 | 4 | 8 |
| 1979 | 0 | 0 | 3 | 0 | 4 | 7 |
| 1980 | 0 | 0 | 4 | 0 | 6 | 10 |
| 1981 | 0 | 1 | 8 | 0 | 10 | 19 |
| 1982 | 0 | 0 | 9 | 0 | 9 | 18 |
| 1983 | 0 | 0 | 6 | 0 | 3 | 9 |
| 1984 | 0 | 0 | 3 | 0 | 8 | 11 |
| 1985 | 0 | 1 | 1 | 0 | 10 | 12 |
| 1986 | 0 | 1 | 13 | 0 | 7 | 21 |
| 1987 | 0 | 4 | 6 | 0 | 10 | 20 |
| 1988 | 0 | 1 | 11 | 0 | 10 | 22 |
| 1989 | 0 | 1 | 6 | 0 | 11 | 18 |
| 1990 | 0 | 3 | 18 | 0 | 16 | 37 |
| 1991 | 1 | 7 | 51 | 0 | 11 | 70 |
| 1992 | 2 | 3 | 34 | 0 | 11 | 50 |
| 1993 | 7 | 3 | 62 | 0 | 12 | 84 |
| 1994 | 1 | 3 | 48 | 0 | 17 | 69 |
| 1995 | 4 | 2 | 64 | 0 | 10 | 80 |
| 1996 | 3 | 5 | 31 | 0 | 10 | 49 |
| 1997 | 4 | 1 | 33 | 0 | 17 | 55 |
| 1998 | 1 | 1 | 33 | 0 | 16 | 51 |
| 1999 | 1 | 2 | 32 | 0 | 20 | 55 |
| 2000 | 3 | 4 | 47 | 0 | 19 | 73 |
| 2001 | 3 | 3 | 43 | 0 | 22 | 71 |
| 2002 | 1 | 2 | 56 | 0 | 10 | 69 |
| 2003 | 6 | 5 | 40 | 0 | 12 | 63 |
| 2004 | 0 | 3 | 30 | 0 | 16 | 49 |
| 2005 | 2 | 4 | 50 | 0 | 19 | 75 |
| 2006 | 2 | 5 | 67 | 0 | 18 | 92 |
| 2007 | 2 | 2 | 64 | 0 | 22 | 90 |
| 2008 | 1 | 1 | 100 | 3 | 12 | 117 |
| 2009 | 0 | 0 | 169 | 0 | 27 | 196 |
| 2010 | 2 | 0 | 182 | 1 | 20 | 205 |
| 2011 | 6 | 3 | 276 | 0 | 21 | 306 |
| 2012 | 1 | 6 | 418 | 1 | 73 | 499 |
| 2013 | 1 | 8 | 385 | 0 | 55 | 449 |
| 2014 | 5 | 6 | 266 | 1 | 57 | 335 |
| 2015 | 6 | 4 | 318 | 0 | 83 | 411 |
| 2016 | 4 | 5 | 446 | 3 | 111 | 569 |
| 2017 | 9 | 5 | 533 | 1 | 99 | 647 |
| 2018 | 8 | 4 | 544 | 0 | 86 | 642 |
| 2019 | 7 | 9 | 576 | 1 | 85 | 678 |
| 2020 | 3 | 11 | 710 | 0 | 105 | 829 |
| 2021 | 7 | 9 | 664 | 1 | 112 | 793 |
| 2022 | 11 | 6 | 617 | 0 | 106 | 740 |
| 2023 | 0 | 2 | 17 | 0 | 0 | 19 |
| 2024 | 0 | 0 | 18 | 0 | 1 | 19 |
| Total | 114 | 151 | 7131 | 12 | 1460 | 8868 |