

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 3 | 5 | 0 | 0 | 8 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1974 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1975 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1976 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1977 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1978 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1979 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1980 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1981 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1982 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1983 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1984 | 1 | 2 | 1 | 0 | 0 | 4 |
| 1985 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1986 | 0 | 3 | 3 | 0 | 0 | 6 |
| 1987 | 0 | 1 | 19 | 0 | 0 | 20 |
| 1988 | 0 | 2 | 18 | 0 | 0 | 20 |
| 1989 | 0 | 2 | 9 | 0 | 0 | 11 |
| 1990 | 0 | 14 | 3 | 0 | 0 | 17 |
| 1991 | 0 | 8 | 7 | 0 | 0 | 15 |
| 1992 | 0 | 90 | 6 | 0 | 0 | 96 |
| 1993 | 0 | 157 | 5 | 0 | 0 | 162 |
| 1994 | 2 | 473 | 17 | 0 | 0 | 492 |
| 1995 | 0 | 427 | 12 | 0 | 0 | 439 |
| 1996 | 0 | 474 | 12 | 0 | 0 | 486 |
| 1997 | 0 | 231 | 9 | 0 | 0 | 240 |
| 1998 | 0 | 231 | 6 | 0 | 0 | 237 |
| 1999 | 0 | 54 | 9 | 0 | 0 | 63 |
| 2000 | 0 | 370 | 13 | 0 | 0 | 383 |
| 2001 | 1 | 203 | 13 | 0 | 0 | 217 |
| 2002 | 0 | 321 | 20 | 0 | 0 | 341 |
| 2003 | 0 | 144 | 16 | 0 | 0 | 160 |
| 2004 | 1 | 318 | 14 | 0 | 0 | 333 |
| 2005 | 0 | 52 | 28 | 0 | 0 | 80 |
| 2006 | 0 | 128 | 24 | 0 | 0 | 152 |
| 2007 | 0 | 133 | 33 | 0 | 0 | 166 |
| 2008 | 0 | 112 | 32 | 0 | 0 | 144 |
| 2009 | 0 | 22 | 44 | 0 | 0 | 66 |
| 2010 | 0 | 136 | 74 | 0 | 0 | 210 |
| 2011 | 0 | 70 | 79 | 0 | 0 | 149 |
| 2012 | 1 | 140 | 50 | 0 | 0 | 191 |
| 2013 | 1 | 220 | 66 | 0 | 0 | 287 |
| 2014 | 0 | 250 | 118 | 0 | 0 | 368 |
| 2015 | 0 | 315 | 131 | 0 | 0 | 446 |
| 2016 | 0 | 339 | 135 | 0 | 0 | 474 |
| 2017 | 0 | 404 | 218 | 0 | 0 | 622 |
| 2018 | 0 | 490 | 239 | 0 | 0 | 729 |
| 2019 | 3 | 432 | 229 | 0 | 0 | 664 |
| 2020 | 1 | 566 | 278 | 0 | 0 | 845 |
| 2021 | 0 | 424 | 217 | 0 | 0 | 641 |
| 2022 | 1 | 465 | 229 | 0 | 0 | 695 |
| 2023 | 2 | 513 | 153 | 0 | 0 | 668 |
| 2024 | 0 | 538 | 204 | 0 | 0 | 742 |
| 2025 | 0 | 0 | 6 | 0 | 0 | 6 |
| Total | 14 | 9281 | 2818 | 0 | 0 | 12113 |