

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 17 | 0 | 0 | 18 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 1 | 0 | 5 | 0 | 0 | 6 |
| 1974 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1975 | 0 | 5 | 4 | 0 | 0 | 9 |
| 1976 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1977 | 0 | 0 | 10 | 0 | 0 | 10 |
| 1978 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1979 | 1 | 0 | 7 | 0 | 0 | 8 |
| 1980 | 0 | 0 | 7 | 0 | 0 | 7 |
| 1981 | 0 | 0 | 9 | 0 | 0 | 9 |
| 1982 | 0 | 0 | 6 | 0 | 0 | 6 |
| 1983 | 0 | 0 | 7 | 0 | 0 | 7 |
| 1984 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1985 | 0 | 0 | 10 | 0 | 0 | 10 |
| 1986 | 1 | 1 | 6 | 0 | 0 | 8 |
| 1987 | 0 | 0 | 11 | 0 | 0 | 11 |
| 1988 | 2 | 1 | 10 | 0 | 0 | 13 |
| 1989 | 1 | 7 | 13 | 0 | 0 | 21 |
| 1990 | 0 | 14 | 32 | 0 | 0 | 46 |
| 1991 | 5 | 10 | 21 | 0 | 0 | 36 |
| 1992 | 0 | 6 | 25 | 0 | 0 | 31 |
| 1993 | 0 | 16 | 25 | 0 | 0 | 41 |
| 1994 | 1 | 17 | 35 | 0 | 0 | 53 |
| 1995 | 7 | 9 | 42 | 0 | 0 | 58 |
| 1996 | 2 | 25 | 24 | 0 | 0 | 51 |
| 1997 | 3 | 27 | 52 | 0 | 0 | 82 |
| 1998 | 0 | 19 | 50 | 0 | 0 | 69 |
| 1999 | 2 | 9 | 47 | 0 | 0 | 58 |
| 2000 | 2 | 8 | 90 | 0 | 0 | 100 |
| 2001 | 2 | 9 | 132 | 0 | 0 | 143 |
| 2002 | 4 | 3 | 138 | 0 | 0 | 145 |
| 2003 | 2 | 3 | 122 | 0 | 0 | 127 |
| 2004 | 2 | 11 | 88 | 0 | 0 | 101 |
| 2005 | 1 | 21 | 113 | 0 | 0 | 135 |
| 2006 | 1 | 9 | 90 | 0 | 0 | 100 |
| 2007 | 0 | 12 | 119 | 0 | 0 | 131 |
| 2008 | 5 | 7 | 129 | 0 | 0 | 141 |
| 2009 | 2 | 7 | 143 | 0 | 0 | 152 |
| 2010 | 0 | 14 | 143 | 0 | 0 | 157 |
| 2011 | 2 | 21 | 189 | 0 | 0 | 212 |
| 2012 | 2 | 12 | 254 | 0 | 0 | 268 |
| 2013 | 4 | 5 | 232 | 0 | 0 | 241 |
| 2014 | 1 | 8 | 238 | 0 | 0 | 247 |
| 2015 | 5 | 5 | 334 | 0 | 0 | 344 |
| 2016 | 3 | 4 | 298 | 0 | 0 | 305 |
| 2017 | 3 | 4 | 377 | 0 | 0 | 384 |
| 2018 | 3 | 9 | 457 | 0 | 0 | 469 |
| 2019 | 6 | 3 | 499 | 0 | 0 | 508 |
| 2020 | 3 | 2 | 575 | 0 | 0 | 580 |
| 2021 | 2 | 3 | 592 | 0 | 0 | 597 |
| 2022 | 0 | 1 | 592 | 0 | 0 | 593 |
| 2023 | 7 | 7 | 569 | 0 | 0 | 583 |
| 2024 | 8 | 11 | 566 | 0 | 0 | 585 |
| 2025 | 0 | 1 | 12 | 0 | 0 | 13 |
| Total | 96 | 367 | 7582 | 0 | 0 | 8045 |