

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 11 | 0 | 0 | 12 |
| 1970 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1971 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1974 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1975 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1976 | 0 | 2 | 1 | 0 | 0 | 3 |
| 1977 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1978 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1979 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1980 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1981 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1982 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1983 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1984 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1985 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1986 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1987 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1988 | 1 | 1 | 7 | 0 | 0 | 9 |
| 1989 | 0 | 5 | 6 | 0 | 0 | 11 |
| 1990 | 1 | 7 | 1 | 0 | 1 | 10 |
| 1991 | 0 | 12 | 2 | 0 | 0 | 14 |
| 1992 | 1 | 15 | 4 | 0 | 0 | 20 |
| 1993 | 0 | 53 | 8 | 0 | 0 | 61 |
| 1994 | 1 | 393 | 12 | 0 | 0 | 406 |
| 1995 | 2 | 307 | 9 | 0 | 0 | 318 |
| 1996 | 0 | 359 | 4 | 0 | 0 | 363 |
| 1997 | 0 | 31 | 6 | 0 | 0 | 37 |
| 1998 | 0 | 228 | 8 | 0 | 0 | 236 |
| 1999 | 0 | 27 | 5 | 0 | 0 | 32 |
| 2000 | 0 | 339 | 12 | 0 | 0 | 351 |
| 2001 | 0 | 175 | 4 | 0 | 1 | 180 |
| 2002 | 0 | 446 | 14 | 0 | 0 | 460 |
| 2003 | 0 | 157 | 17 | 0 | 0 | 174 |
| 2004 | 0 | 482 | 8 | 0 | 0 | 490 |
| 2005 | 0 | 91 | 16 | 0 | 2 | 109 |
| 2006 | 0 | 456 | 21 | 0 | 1 | 478 |
| 2007 | 0 | 449 | 21 | 0 | 0 | 470 |
| 2008 | 0 | 79 | 20 | 0 | 0 | 99 |
| 2009 | 1 | 71 | 48 | 0 | 1 | 121 |
| 2010 | 0 | 207 | 47 | 0 | 0 | 254 |
| 2011 | 0 | 189 | 46 | 0 | 3 | 238 |
| 2012 | 0 | 242 | 50 | 0 | 1 | 293 |
| 2013 | 3 | 247 | 118 | 0 | 0 | 368 |
| 2014 | 2 | 307 | 81 | 0 | 0 | 390 |
| 2015 | 0 | 454 | 118 | 0 | 0 | 572 |
| 2016 | 1 | 429 | 122 | 0 | 0 | 552 |
| 2017 | 2 | 453 | 145 | 0 | 0 | 600 |
| 2018 | 2 | 416 | 186 | 0 | 3 | 607 |
| 2019 | 0 | 372 | 200 | 0 | 2 | 574 |
| 2020 | 1 | 452 | 231 | 0 | 1 | 685 |
| 2021 | 2 | 342 | 163 | 0 | 3 | 510 |
| 2022 | 0 | 369 | 224 | 0 | 0 | 593 |
| 2023 | 3 | 593 | 72 | 0 | 0 | 668 |
| 2024 | 4 | 578 | 82 | 0 | 0 | 664 |
| 2025 | 0 | 1 | 0 | 0 | 0 | 1 |
| Total | 27 | 9838 | 2182 | 0 | 19 | 12066 |