

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 6 | 0 | 0 | 6 |
| 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 | 1 | 0 | 0 | 1 |
| 1975 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1976 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1977 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1978 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1979 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1980 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1981 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1982 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1983 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1984 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1985 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1986 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1987 | 0 | 1 | 7 | 0 | 0 | 8 |
| 1988 | 0 | 1 | 6 | 0 | 0 | 7 |
| 1989 | 0 | 8 | 3 | 0 | 0 | 11 |
| 1990 | 2 | 25 | 2 | 0 | 0 | 29 |
| 1991 | 0 | 8 | 8 | 0 | 0 | 16 |
| 1992 | 1 | 20 | 6 | 0 | 0 | 27 |
| 1993 | 0 | 62 | 4 | 0 | 0 | 66 |
| 1994 | 0 | 102 | 13 | 0 | 0 | 115 |
| 1995 | 0 | 44 | 5 | 0 | 0 | 49 |
| 1996 | 1 | 100 | 3 | 0 | 0 | 104 |
| 1997 | 0 | 143 | 6 | 0 | 0 | 149 |
| 1998 | 0 | 141 | 4 | 0 | 0 | 145 |
| 1999 | 0 | 106 | 4 | 0 | 0 | 110 |
| 2000 | 1 | 195 | 18 | 0 | 0 | 214 |
| 2001 | 1 | 310 | 8 | 0 | 0 | 319 |
| 2002 | 0 | 162 | 14 | 0 | 0 | 176 |
| 2003 | 0 | 312 | 17 | 0 | 0 | 329 |
| 2004 | 0 | 228 | 9 | 0 | 0 | 237 |
| 2005 | 0 | 200 | 14 | 0 | 0 | 214 |
| 2006 | 1 | 197 | 21 | 0 | 0 | 219 |
| 2007 | 1 | 144 | 41 | 0 | 0 | 186 |
| 2008 | 0 | 84 | 26 | 0 | 0 | 110 |
| 2009 | 1 | 65 | 36 | 0 | 0 | 102 |
| 2010 | 0 | 40 | 78 | 0 | 0 | 118 |
| 2011 | 0 | 33 | 63 | 0 | 0 | 96 |
| 2012 | 2 | 172 | 69 | 0 | 0 | 243 |
| 2013 | 5 | 169 | 85 | 0 | 0 | 259 |
| 2014 | 1 | 172 | 95 | 0 | 0 | 268 |
| 2015 | 1 | 238 | 94 | 0 | 0 | 333 |
| 2016 | 0 | 281 | 112 | 0 | 0 | 393 |
| 2017 | 3 | 299 | 125 | 0 | 0 | 427 |
| 2018 | 0 | 351 | 193 | 0 | 0 | 544 |
| 2019 | 3 | 378 | 195 | 0 | 0 | 576 |
| 2020 | 2 | 352 | 230 | 0 | 0 | 584 |
| 2021 | 2 | 465 | 235 | 0 | 0 | 702 |
| 2022 | 3 | 465 | 258 | 0 | 0 | 726 |
| 2023 | 4 | 636 | 133 | 0 | 0 | 773 |
| 2024 | 2 | 646 | 159 | 0 | 0 | 807 |
| 2025 | 0 | 0 | 5 | 0 | 0 | 5 |
| Total | 37 | 7358 | 2421 | 0 | 0 | 9816 |