

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 10 | 2 | 2 | 0 | 0 | 14 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1974 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1975 | 0 | 28 | 2 | 0 | 0 | 30 |
| 1976 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1977 | 1 | 1 | 3 | 0 | 0 | 5 |
| 1978 | 1 | 0 | 0 | 0 | 0 | 1 |
| 1979 | 2 | 7 | 0 | 0 | 0 | 9 |
| 1980 | 0 | 5 | 3 | 0 | 0 | 8 |
| 1981 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1982 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1983 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1984 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1985 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1986 | 0 | 2 | 2 | 0 | 0 | 4 |
| 1987 | 0 | 3 | 1 | 0 | 0 | 4 |
| 1988 | 1 | 11 | 3 | 0 | 0 | 15 |
| 1989 | 0 | 4 | 2 | 0 | 0 | 6 |
| 1990 | 1 | 19 | 2 | 0 | 0 | 22 |
| 1991 | 0 | 5 | 0 | 0 | 0 | 5 |
| 1992 | 0 | 19 | 3 | 0 | 0 | 22 |
| 1993 | 0 | 30 | 2 | 0 | 0 | 32 |
| 1994 | 0 | 145 | 7 | 0 | 0 | 152 |
| 1995 | 1 | 83 | 8 | 0 | 0 | 92 |
| 1996 | 3 | 104 | 4 | 0 | 0 | 111 |
| 1997 | 1 | 173 | 8 | 0 | 0 | 182 |
| 1998 | 8 | 153 | 6 | 0 | 0 | 167 |
| 1999 | 1 | 96 | 3 | 0 | 0 | 100 |
| 2000 | 2 | 191 | 7 | 0 | 0 | 200 |
| 2001 | 3 | 155 | 8 | 0 | 0 | 166 |
| 2002 | 1 | 285 | 13 | 0 | 0 | 299 |
| 2003 | 4 | 318 | 13 | 0 | 0 | 335 |
| 2004 | 1 | 376 | 15 | 0 | 0 | 392 |
| 2005 | 1 | 141 | 10 | 0 | 0 | 152 |
| 2006 | 0 | 262 | 33 | 0 | 0 | 295 |
| 2007 | 2 | 425 | 33 | 0 | 0 | 460 |
| 2008 | 6 | 190 | 27 | 0 | 0 | 223 |
| 2009 | 3 | 293 | 37 | 0 | 0 | 333 |
| 2010 | 8 | 394 | 52 | 0 | 0 | 454 |
| 2011 | 2 | 274 | 58 | 0 | 0 | 334 |
| 2012 | 38 | 540 | 77 | 0 | 0 | 655 |
| 2013 | 5 | 564 | 160 | 0 | 0 | 729 |
| 2014 | 0 | 672 | 46 | 0 | 0 | 718 |
| 2015 | 3 | 420 | 72 | 0 | 0 | 495 |
| 2016 | 4 | 401 | 70 | 0 | 0 | 475 |
| 2017 | 2 | 462 | 74 | 0 | 0 | 538 |
| 2018 | 4 | 431 | 93 | 0 | 0 | 528 |
| 2019 | 8 | 423 | 117 | 0 | 0 | 548 |
| 2020 | 9 | 374 | 117 | 0 | 1 | 501 |
| 2021 | 7 | 401 | 135 | 0 | 0 | 543 |
| 2022 | 6 | 574 | 130 | 0 | 0 | 710 |
| 2023 | 8 | 689 | 68 | 0 | 0 | 765 |
| 2024 | 9 | 567 | 101 | 0 | 0 | 677 |
| 2025 | 0 | 3 | 4 | 0 | 0 | 7 |
| Total | 166 | 10719 | 1641 | 0 | 1 | 12527 |