

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 1 | 2 | 12 | 0 | 0 | 15 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1974 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1975 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1976 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1977 | 0 | 0 | 10 | 0 | 0 | 10 |
| 1978 | 1 | 0 | 1 | 0 | 0 | 2 |
| 1979 | 1 | 0 | 6 | 0 | 0 | 7 |
| 1980 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1981 | 0 | 0 | 8 | 0 | 0 | 8 |
| 1982 | 1 | 0 | 3 | 0 | 0 | 4 |
| 1983 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1984 | 0 | 0 | 7 | 0 | 0 | 7 |
| 1985 | 1 | 0 | 5 | 0 | 0 | 6 |
| 1986 | 0 | 2 | 7 | 0 | 0 | 9 |
| 1987 | 3 | 1 | 13 | 0 | 0 | 17 |
| 1988 | 2 | 0 | 17 | 0 | 0 | 19 |
| 1989 | 0 | 2 | 17 | 0 | 0 | 19 |
| 1990 | 3 | 5 | 19 | 0 | 0 | 27 |
| 1991 | 9 | 4 | 34 | 0 | 0 | 47 |
| 1992 | 5 | 2 | 31 | 0 | 0 | 38 |
| 1993 | 4 | 6 | 31 | 0 | 0 | 41 |
| 1994 | 6 | 12 | 44 | 0 | 0 | 62 |
| 1995 | 4 | 7 | 45 | 0 | 0 | 56 |
| 1996 | 6 | 16 | 43 | 0 | 0 | 65 |
| 1997 | 3 | 17 | 59 | 0 | 0 | 79 |
| 1998 | 3 | 7 | 33 | 0 | 0 | 43 |
| 1999 | 1 | 7 | 39 | 0 | 0 | 47 |
| 2000 | 5 | 4 | 108 | 0 | 0 | 117 |
| 2001 | 4 | 1 | 120 | 0 | 0 | 125 |
| 2002 | 0 | 0 | 119 | 0 | 0 | 119 |
| 2003 | 5 | 1 | 123 | 0 | 1 | 130 |
| 2004 | 1 | 4 | 59 | 0 | 0 | 64 |
| 2005 | 3 | 6 | 87 | 0 | 0 | 96 |
| 2006 | 5 | 4 | 68 | 0 | 0 | 77 |
| 2007 | 1 | 0 | 81 | 0 | 0 | 82 |
| 2008 | 1 | 1 | 86 | 0 | 0 | 88 |
| 2009 | 3 | 1 | 121 | 0 | 0 | 125 |
| 2010 | 3 | 0 | 138 | 0 | 0 | 141 |
| 2011 | 2 | 1 | 152 | 0 | 0 | 155 |
| 2012 | 8 | 2 | 164 | 0 | 0 | 174 |
| 2013 | 8 | 1 | 223 | 0 | 0 | 232 |
| 2014 | 21 | 1 | 199 | 0 | 0 | 221 |
| 2015 | 24 | 3 | 262 | 0 | 0 | 289 |
| 2016 | 11 | 0 | 288 | 0 | 0 | 299 |
| 2017 | 16 | 5 | 377 | 0 | 0 | 398 |
| 2018 | 12 | 12 | 423 | 0 | 0 | 447 |
| 2019 | 10 | 3 | 449 | 0 | 0 | 462 |
| 2020 | 4 | 0 | 484 | 0 | 0 | 488 |
| 2021 | 5 | 5 | 470 | 0 | 0 | 480 |
| 2022 | 3 | 2 | 559 | 0 | 0 | 564 |
| 2023 | 10 | 8 | 439 | 0 | 0 | 457 |
| 2024 | 15 | 7 | 492 | 0 | 0 | 514 |
| 2025 | 0 | 0 | 24 | 0 | 0 | 24 |
| Total | 234 | 163 | 6620 | 0 | 1 | 7018 |