*Excludes Observations that spanned multiple years
| B | b | t | W | w | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 3 | 0 | 13 | 0 | 23 | 39 |
| 1970 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1971 | 0 | 0 | 1 | 0 | 7 | 8 |
| 1972 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1973 | 0 | 0 | 2 | 0 | 3 | 5 |
| 1974 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1975 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1976 | 0 | 0 | 1 | 0 | 5 | 6 |
| 1977 | 3 | 7 | 4 | 0 | 6 | 20 |
| 1978 | 15 | 10 | 1 | 0 | 5 | 31 |
| 1979 | 37 | 8 | 8 | 0 | 2 | 55 |
| 1980 | 51 | 2 | 3 | 0 | 4 | 60 |
| 1981 | 14 | 3 | 2 | 0 | 5 | 24 |
| 1982 | 1 | 0 | 2 | 0 | 7 | 10 |
| 1983 | 0 | 0 | 4 | 0 | 5 | 9 |
| 1984 | 2 | 0 | 2 | 0 | 11 | 15 |
| 1985 | 1 | 0 | 4 | 0 | 7 | 12 |
| 1986 | 0 | 0 | 3 | 0 | 9 | 12 |
| 1987 | 1 | 0 | 7 | 0 | 13 | 21 |
| 1988 | 3 | 0 | 4 | 0 | 14 | 21 |
| 1989 | 0 | 1 | 9 | 0 | 8 | 18 |
| 1990 | 0 | 1 | 4 | 1 | 9 | 15 |
| 1991 | 2 | 3 | 26 | 0 | 5 | 36 |
| 1992 | 0 | 0 | 15 | 0 | 8 | 23 |
| 1993 | 0 | 2 | 25 | 0 | 10 | 37 |
| 1994 | 0 | 2 | 26 | 0 | 17 | 45 |
| 1995 | 0 | 1 | 30 | 1 | 17 | 49 |
| 1996 | 0 | 2 | 25 | 0 | 9 | 36 |
| 1997 | 1 | 1 | 39 | 1 | 14 | 56 |
| 1998 | 2 | 2 | 29 | 0 | 7 | 40 |
| 1999 | 6 | 2 | 45 | 0 | 13 | 66 |
| 2000 | 2 | 7 | 52 | 0 | 14 | 75 |
| 2001 | 1 | 3 | 43 | 0 | 19 | 66 |
| 2002 | 1 | 1 | 46 | 0 | 14 | 62 |
| 2003 | 5 | 3 | 40 | 0 | 15 | 63 |
| 2004 | 0 | 2 | 30 | 0 | 19 | 51 |
| 2005 | 1 | 1 | 29 | 0 | 16 | 47 |
| 2006 | 3 | 1 | 18 | 0 | 19 | 41 |
| 2007 | 2 | 1 | 33 | 0 | 18 | 54 |
| 2008 | 2 | 4 | 55 | 4 | 17 | 82 |
| 2009 | 2 | 1 | 46 | 0 | 21 | 70 |
| 2010 | 2 | 0 | 51 | 0 | 20 | 73 |
| 2011 | 0 | 1 | 97 | 0 | 30 | 128 |
| 2012 | 0 | 1 | 95 | 0 | 54 | 150 |
| 2013 | 6 | 0 | 148 | 0 | 43 | 197 |
| 2014 | 2 | 5 | 162 | 0 | 63 | 232 |
| 2015 | 5 | 3 | 235 | 0 | 118 | 361 |
| 2016 | 6 | 0 | 300 | 1 | 140 | 447 |
| 2017 | 6 | 4 | 342 | 0 | 148 | 500 |
| 2018 | 5 | 1 | 329 | 0 | 117 | 452 |
| 2019 | 10 | 1 | 387 | 1 | 115 | 514 |
| 2020 | 7 | 4 | 449 | 0 | 125 | 585 |
| 2021 | 4 | 1 | 445 | 0 | 140 | 590 |
| 2022 | 0 | 1 | 208 | 0 | 113 | 322 |
| 2023 | 0 | 0 | 5 | 0 | 6 | 11 |
| 2024 | 0 | 1 | 18 | 0 | 2 | 21 |
| Total | 214 | 94 | 3999 | 9 | 1659 | 5975 |