

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 3 | 2 | 9 | 0 | 24 | 38 |
| 1970 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1971 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1972 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1973 | 0 | 0 | 3 | 0 | 4 | 7 |
| 1974 | 1 | 1 | 4 | 0 | 3 | 9 |
| 1975 | 1 | 0 | 4 | 0 | 7 | 12 |
| 1976 | 0 | 2 | 1 | 0 | 7 | 10 |
| 1977 | 0 | 3 | 2 | 0 | 3 | 8 |
| 1978 | 1 | 1 | 0 | 0 | 6 | 8 |
| 1979 | 1 | 1 | 2 | 0 | 5 | 9 |
| 1980 | 0 | 0 | 1 | 0 | 7 | 8 |
| 1981 | 0 | 0 | 1 | 0 | 9 | 10 |
| 1982 | 0 | 0 | 5 | 0 | 10 | 15 |
| 1983 | 0 | 0 | 0 | 0 | 8 | 8 |
| 1984 | 0 | 0 | 2 | 0 | 12 | 14 |
| 1985 | 0 | 0 | 2 | 0 | 12 | 14 |
| 1986 | 0 | 1 | 3 | 0 | 11 | 15 |
| 1987 | 0 | 1 | 7 | 0 | 8 | 16 |
| 1988 | 0 | 1 | 6 | 0 | 12 | 19 |
| 1989 | 0 | 1 | 5 | 0 | 10 | 16 |
| 1990 | 1 | 2 | 11 | 0 | 11 | 25 |
| 1991 | 1 | 2 | 26 | 0 | 7 | 36 |
| 1992 | 2 | 2 | 27 | 0 | 11 | 42 |
| 1993 | 7 | 0 | 55 | 0 | 18 | 80 |
| 1994 | 1 | 3 | 28 | 0 | 14 | 46 |
| 1995 | 1 | 2 | 54 | 0 | 13 | 70 |
| 1996 | 3 | 1 | 34 | 0 | 10 | 48 |
| 1997 | 2 | 0 | 25 | 0 | 14 | 41 |
| 1998 | 2 | 2 | 30 | 0 | 17 | 51 |
| 1999 | 2 | 0 | 19 | 1 | 16 | 38 |
| 2000 | 3 | 1 | 29 | 0 | 19 | 52 |
| 2001 | 0 | 0 | 29 | 0 | 17 | 46 |
| 2002 | 3 | 0 | 32 | 0 | 13 | 48 |
| 2003 | 4 | 2 | 19 | 0 | 12 | 37 |
| 2004 | 1 | 2 | 18 | 0 | 14 | 35 |
| 2005 | 0 | 2 | 27 | 0 | 16 | 45 |
| 2006 | 0 | 2 | 25 | 0 | 16 | 43 |
| 2007 | 3 | 1 | 30 | 0 | 17 | 51 |
| 2008 | 2 | 0 | 50 | 0 | 11 | 63 |
| 2009 | 2 | 0 | 60 | 0 | 23 | 85 |
| 2010 | 5 | 0 | 72 | 0 | 17 | 94 |
| 2011 | 1 | 0 | 148 | 0 | 23 | 172 |
| 2012 | 4 | 2 | 192 | 0 | 46 | 244 |
| 2013 | 2 | 2 | 217 | 1 | 34 | 256 |
| 2014 | 1 | 3 | 150 | 0 | 40 | 194 |
| 2015 | 5 | 1 | 188 | 1 | 57 | 252 |
| 2016 | 4 | 3 | 234 | 0 | 57 | 298 |
| 2017 | 7 | 5 | 265 | 0 | 69 | 346 |
| 2018 | 6 | 5 | 290 | 0 | 59 | 360 |
| 2019 | 6 | 9 | 304 | 0 | 47 | 366 |
| 2020 | 10 | 0 | 342 | 0 | 63 | 415 |
| 2021 | 19 | 5 | 341 | 1 | 44 | 410 |
| 2022 | 11 | 5 | 446 | 1 | 95 | 558 |
| 2023 | 11 | 13 | 386 | 0 | 85 | 495 |
| 2024 | 11 | 11 | 373 | 0 | 93 | 488 |
| 2025 | 0 | 0 | 16 | 0 | 1 | 17 |
| Total | 150 | 102 | 4651 | 5 | 1285 | 6193 |