

*Excludes Observations that spanned multiple years
| B  | b  | t  | W  | w  | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 3 | 3 | 19 | 0 | 8 | 33 | 
| 1970 | 0 | 0 | 2 | 0 | 0 | 2 | 
| 1971 | 0 | 1 | 0 | 0 | 2 | 3 | 
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 | 
| 1973 | 0 | 0 | 2 | 0 | 1 | 3 | 
| 1974 | 0 | 3 | 1 | 0 | 1 | 5 | 
| 1975 | 0 | 0 | 2 | 0 | 0 | 2 | 
| 1976 | 0 | 1 | 3 | 0 | 0 | 4 | 
| 1977 | 0 | 0 | 6 | 0 | 0 | 6 | 
| 1978 | 0 | 0 | 2 | 0 | 1 | 3 | 
| 1979 | 0 | 1 | 5 | 0 | 0 | 6 | 
| 1980 | 0 | 0 | 2 | 0 | 0 | 2 | 
| 1981 | 0 | 0 | 3 | 0 | 1 | 4 | 
| 1982 | 0 | 1 | 8 | 0 | 3 | 12 | 
| 1983 | 0 | 0 | 3 | 0 | 0 | 3 | 
| 1984 | 0 | 4 | 1 | 0 | 1 | 6 | 
| 1985 | 0 | 3 | 4 | 0 | 3 | 10 | 
| 1986 | 0 | 0 | 10 | 0 | 2 | 12 | 
| 1987 | 0 | 3 | 10 | 0 | 3 | 16 | 
| 1988 | 0 | 6 | 8 | 0 | 1 | 15 | 
| 1989 | 0 | 3 | 6 | 0 | 4 | 13 | 
| 1990 | 0 | 11 | 9 | 0 | 3 | 23 | 
| 1991 | 0 | 3 | 21 | 0 | 3 | 27 | 
| 1992 | 2 | 4 | 23 | 0 | 4 | 33 | 
| 1993 | 0 | 49 | 19 | 0 | 2 | 70 | 
| 1994 | 2 | 246 | 26 | 0 | 8 | 282 | 
| 1995 | 0 | 212 | 40 | 0 | 4 | 256 | 
| 1996 | 2 | 235 | 39 | 0 | 1 | 277 | 
| 1997 | 0 | 102 | 38 | 0 | 5 | 145 | 
| 1998 | 0 | 261 | 36 | 0 | 4 | 301 | 
| 1999 | 0 | 44 | 24 | 0 | 4 | 72 | 
| 2000 | 0 | 212 | 40 | 0 | 4 | 256 | 
| 2001 | 0 | 231 | 44 | 0 | 3 | 278 | 
| 2002 | 0 | 213 | 47 | 0 | 1 | 261 | 
| 2003 | 1 | 271 | 39 | 0 | 1 | 312 | 
| 2004 | 0 | 228 | 44 | 0 | 2 | 274 | 
| 2005 | 1 | 122 | 48 | 0 | 2 | 173 | 
| 2006 | 2 | 96 | 71 | 0 | 2 | 171 | 
| 2007 | 1 | 100 | 87 | 0 | 1 | 189 | 
| 2008 | 0 | 76 | 91 | 0 | 0 | 167 | 
| 2009 | 0 | 45 | 120 | 0 | 6 | 171 | 
| 2010 | 4 | 125 | 137 | 0 | 1 | 267 | 
| 2011 | 1 | 91 | 191 | 0 | 5 | 288 | 
| 2012 | 4 | 197 | 212 | 0 | 3 | 416 | 
| 2013 | 8 | 308 | 219 | 0 | 1 | 536 | 
| 2014 | 4 | 305 | 254 | 0 | 5 | 568 | 
| 2015 | 5 | 379 | 408 | 0 | 4 | 796 | 
| 2016 | 6 | 437 | 368 | 0 | 5 | 816 | 
| 2017 | 12 | 529 | 576 | 0 | 4 | 1121 | 
| 2018 | 9 | 508 | 486 | 0 | 5 | 1008 | 
| 2019 | 6 | 599 | 566 | 0 | 4 | 1175 | 
| 2020 | 9 | 590 | 670 | 0 | 10 | 1279 | 
| 2021 | 3 | 628 | 710 | 0 | 6 | 1347 | 
| 2022 | 9 | 747 | 902 | 0 | 3 | 1661 | 
| 2023 | 16 | 906 | 674 | 0 | 12 | 1608 | 
| 2024 | 12 | 953 | 702 | 0 | 7 | 1674 | 
| 2025 | 0 | 0 | 28 | 0 | 0 | 28 | 
| Total | 122 | 10092 | 8106 | 0 | 166 | 18486 |