

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 3 | 6 | 0 | 5 | 14 |
| 1970 | 0 | 1 | 3 | 0 | 1 | 5 |
| 1971 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1972 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1973 | 0 | 0 | 3 | 0 | 2 | 5 |
| 1974 | 0 | 0 | 2 | 0 | 2 | 4 |
| 1975 | 0 | 1 | 5 | 0 | 2 | 8 |
| 1976 | 0 | 1 | 2 | 0 | 2 | 5 |
| 1977 | 0 | 0 | 4 | 0 | 4 | 8 |
| 1978 | 0 | 1 | 3 | 0 | 4 | 8 |
| 1979 | 1 | 1 | 2 | 0 | 4 | 8 |
| 1980 | 0 | 0 | 2 | 0 | 2 | 4 |
| 1981 | 0 | 1 | 1 | 0 | 3 | 5 |
| 1982 | 0 | 1 | 5 | 0 | 4 | 10 |
| 1983 | 0 | 0 | 3 | 0 | 5 | 8 |
| 1984 | 0 | 1 | 5 | 0 | 3 | 9 |
| 1985 | 0 | 1 | 2 | 0 | 3 | 6 |
| 1986 | 0 | 3 | 10 | 1 | 8 | 22 |
| 1987 | 0 | 5 | 11 | 0 | 6 | 22 |
| 1988 | 0 | 3 | 14 | 0 | 8 | 25 |
| 1989 | 1 | 5 | 24 | 0 | 7 | 37 |
| 1990 | 0 | 15 | 6 | 1 | 8 | 30 |
| 1991 | 2 | 8 | 12 | 0 | 4 | 26 |
| 1992 | 0 | 18 | 14 | 1 | 9 | 42 |
| 1993 | 3 | 104 | 16 | 0 | 9 | 132 |
| 1994 | 0 | 280 | 21 | 0 | 9 | 310 |
| 1995 | 3 | 317 | 19 | 0 | 12 | 351 |
| 1996 | 3 | 202 | 14 | 0 | 7 | 226 |
| 1997 | 0 | 68 | 9 | 0 | 11 | 88 |
| 1998 | 1 | 75 | 12 | 0 | 8 | 96 |
| 1999 | 0 | 17 | 6 | 0 | 3 | 26 |
| 2000 | 1 | 47 | 9 | 0 | 11 | 68 |
| 2001 | 0 | 71 | 10 | 0 | 11 | 92 |
| 2002 | 0 | 119 | 20 | 0 | 4 | 143 |
| 2003 | 2 | 97 | 20 | 0 | 5 | 124 |
| 2004 | 1 | 172 | 14 | 0 | 4 | 191 |
| 2005 | 0 | 21 | 25 | 0 | 8 | 54 |
| 2006 | 2 | 50 | 30 | 0 | 9 | 91 |
| 2007 | 1 | 84 | 39 | 0 | 8 | 132 |
| 2008 | 0 | 46 | 44 | 0 | 4 | 94 |
| 2009 | 0 | 21 | 40 | 0 | 10 | 71 |
| 2010 | 1 | 71 | 59 | 0 | 7 | 138 |
| 2011 | 0 | 55 | 65 | 0 | 9 | 129 |
| 2012 | 0 | 105 | 50 | 0 | 7 | 162 |
| 2013 | 5 | 176 | 86 | 0 | 7 | 274 |
| 2014 | 4 | 209 | 116 | 0 | 12 | 341 |
| 2015 | 1 | 219 | 130 | 0 | 18 | 368 |
| 2016 | 2 | 303 | 149 | 0 | 18 | 472 |
| 2017 | 4 | 407 | 282 | 0 | 18 | 711 |
| 2018 | 3 | 458 | 232 | 0 | 9 | 702 |
| 2019 | 2 | 476 | 284 | 0 | 13 | 775 |
| 2020 | 12 | 717 | 268 | 0 | 22 | 1019 |
| 2021 | 6 | 557 | 271 | 0 | 124 | 958 |
| 2022 | 6 | 516 | 318 | 0 | 31 | 871 |
| 2023 | 2 | 521 | 320 | 0 | 41 | 884 |
| 2024 | 2 | 689 | 262 | 0 | 17 | 970 |
| 2025 | 0 | 0 | 14 | 0 | 0 | 14 |
| Total | 71 | 7339 | 3396 | 3 | 584 | 11393 |