

*Excludes Observations that spanned multiple years
| B  | b  | t  | W  | w  | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 1 | 0 | 6 | 0 | 48 | 55 | 
| 1970 | 0 | 0 | 1 | 0 | 1 | 2 | 
| 1971 | 0 | 0 | 1 | 0 | 5 | 6 | 
| 1972 | 0 | 0 | 0 | 0 | 4 | 4 | 
| 1973 | 0 | 0 | 2 | 0 | 3 | 5 | 
| 1974 | 0 | 3 | 1 | 0 | 1 | 5 | 
| 1975 | 0 | 6 | 6 | 0 | 2 | 14 | 
| 1976 | 0 | 3 | 3 | 0 | 5 | 11 | 
| 1977 | 0 | 5 | 13 | 0 | 6 | 24 | 
| 1978 | 0 | 2 | 7 | 0 | 5 | 14 | 
| 1979 | 0 | 1 | 11 | 0 | 5 | 17 | 
| 1980 | 0 | 0 | 8 | 0 | 4 | 12 | 
| 1981 | 0 | 1 | 15 | 0 | 5 | 21 | 
| 1982 | 0 | 1 | 8 | 0 | 8 | 17 | 
| 1983 | 0 | 1 | 9 | 0 | 3 | 13 | 
| 1984 | 0 | 0 | 4 | 0 | 6 | 10 | 
| 1985 | 1 | 0 | 8 | 0 | 5 | 14 | 
| 1986 | 2 | 2 | 14 | 0 | 6 | 24 | 
| 1987 | 2 | 1 | 18 | 0 | 16 | 37 | 
| 1988 | 3 | 6 | 12 | 0 | 13 | 34 | 
| 1989 | 1 | 8 | 9 | 0 | 9 | 27 | 
| 1990 | 1 | 5 | 18 | 0 | 8 | 32 | 
| 1991 | 3 | 7 | 36 | 0 | 6 | 52 | 
| 1992 | 3 | 4 | 24 | 0 | 7 | 38 | 
| 1993 | 1 | 12 | 33 | 0 | 11 | 57 | 
| 1994 | 3 | 12 | 53 | 0 | 14 | 82 | 
| 1995 | 3 | 6 | 60 | 0 | 10 | 79 | 
| 1996 | 3 | 8 | 36 | 0 | 9 | 56 | 
| 1997 | 2 | 10 | 47 | 0 | 16 | 75 | 
| 1998 | 3 | 20 | 53 | 0 | 13 | 89 | 
| 1999 | 0 | 9 | 35 | 0 | 8 | 52 | 
| 2000 | 3 | 6 | 50 | 0 | 15 | 74 | 
| 2001 | 2 | 6 | 29 | 0 | 16 | 53 | 
| 2002 | 0 | 2 | 52 | 0 | 5 | 59 | 
| 2003 | 3 | 3 | 48 | 0 | 10 | 64 | 
| 2004 | 0 | 7 | 36 | 0 | 15 | 58 | 
| 2005 | 2 | 7 | 68 | 0 | 15 | 92 | 
| 2006 | 1 | 5 | 91 | 1 | 16 | 114 | 
| 2007 | 1 | 3 | 64 | 1 | 17 | 86 | 
| 2008 | 0 | 2 | 83 | 1 | 13 | 99 | 
| 2009 | 2 | 1 | 140 | 0 | 17 | 160 | 
| 2010 | 3 | 5 | 148 | 0 | 13 | 169 | 
| 2011 | 1 | 6 | 188 | 0 | 23 | 218 | 
| 2012 | 2 | 7 | 289 | 0 | 36 | 334 | 
| 2013 | 0 | 4 | 344 | 0 | 28 | 376 | 
| 2014 | 2 | 8 | 271 | 0 | 46 | 327 | 
| 2015 | 6 | 4 | 424 | 0 | 39 | 473 | 
| 2016 | 0 | 4 | 502 | 0 | 45 | 551 | 
| 2017 | 7 | 3 | 643 | 1 | 50 | 704 | 
| 2018 | 4 | 2 | 661 | 1 | 48 | 716 | 
| 2019 | 12 | 5 | 706 | 0 | 51 | 774 | 
| 2020 | 5 | 6 | 859 | 0 | 63 | 933 | 
| 2021 | 1 | 4 | 862 | 0 | 57 | 924 | 
| 2022 | 4 | 8 | 995 | 0 | 74 | 1081 | 
| 2023 | 3 | 13 | 856 | 0 | 92 | 964 | 
| 2024 | 6 | 7 | 881 | 0 | 103 | 997 | 
| 2025 | 0 | 1 | 15 | 0 | 0 | 16 | 
| Total | 102 | 262 | 9856 | 5 | 1169 | 11394 |