

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 1 | 3 | 9 | 0 | 0 | 13 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1974 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1975 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1976 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1977 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1978 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1979 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1980 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1981 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1982 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1983 | 0 | 2 | 1 | 0 | 0 | 3 |
| 1984 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1985 | 0 | 2 | 4 | 0 | 0 | 6 |
| 1986 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1987 | 0 | 2 | 5 | 0 | 0 | 7 |
| 1988 | 0 | 3 | 9 | 0 | 0 | 12 |
| 1989 | 0 | 5 | 6 | 0 | 0 | 11 |
| 1990 | 2 | 6 | 8 | 0 | 0 | 16 |
| 1991 | 4 | 7 | 11 | 0 | 0 | 22 |
| 1992 | 6 | 2 | 22 | 0 | 0 | 30 |
| 1993 | 1 | 6 | 30 | 0 | 0 | 37 |
| 1994 | 0 | 19 | 51 | 0 | 0 | 70 |
| 1995 | 3 | 10 | 57 | 0 | 0 | 70 |
| 1996 | 2 | 9 | 71 | 0 | 0 | 82 |
| 1997 | 0 | 14 | 18 | 0 | 0 | 32 |
| 1998 | 0 | 12 | 33 | 0 | 0 | 45 |
| 1999 | 0 | 4 | 14 | 0 | 0 | 18 |
| 2000 | 0 | 6 | 62 | 0 | 0 | 68 |
| 2001 | 1 | 8 | 28 | 0 | 0 | 37 |
| 2002 | 1 | 13 | 40 | 0 | 0 | 54 |
| 2003 | 0 | 11 | 39 | 0 | 0 | 50 |
| 2004 | 0 | 21 | 143 | 0 | 0 | 164 |
| 2005 | 0 | 14 | 45 | 0 | 0 | 59 |
| 2006 | 6 | 18 | 52 | 0 | 0 | 76 |
| 2007 | 0 | 29 | 48 | 0 | 0 | 77 |
| 2008 | 0 | 19 | 41 | 0 | 0 | 60 |
| 2009 | 0 | 10 | 35 | 0 | 0 | 45 |
| 2010 | 1 | 37 | 101 | 0 | 0 | 139 |
| 2011 | 0 | 21 | 47 | 0 | 0 | 68 |
| 2012 | 0 | 66 | 48 | 0 | 0 | 114 |
| 2013 | 1 | 82 | 72 | 0 | 0 | 155 |
| 2014 | 4 | 88 | 80 | 0 | 0 | 172 |
| 2015 | 1 | 105 | 102 | 0 | 0 | 208 |
| 2016 | 2 | 122 | 113 | 0 | 0 | 237 |
| 2017 | 1 | 165 | 151 | 0 | 0 | 317 |
| 2018 | 1 | 165 | 170 | 0 | 0 | 336 |
| 2019 | 6 | 227 | 205 | 0 | 0 | 438 |
| 2020 | 2 | 242 | 231 | 0 | 0 | 475 |
| 2021 | 3 | 230 | 261 | 0 | 0 | 494 |
| 2022 | 4 | 246 | 271 | 0 | 0 | 521 |
| 2023 | 2 | 361 | 165 | 0 | 0 | 528 |
| 2024 | 5 | 318 | 193 | 0 | 0 | 516 |
| 2025 | 0 | 0 | 9 | 0 | 0 | 9 |
| 2026 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 60 | 2739 | 3121 | 0 | 0 | 5920 |