

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 2 | 9 | 0 | 0 | 11 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1974 | 0 | 1 | 1 | 0 | 1 | 3 |
| 1975 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1976 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1977 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1978 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1979 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1980 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1981 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1982 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1983 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1984 | 0 | 1 | 8 | 0 | 0 | 9 |
| 1985 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1986 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1987 | 0 | 4 | 3 | 0 | 0 | 7 |
| 1988 | 0 | 5 | 5 | 0 | 0 | 10 |
| 1989 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1990 | 0 | 8 | 1 | 0 | 0 | 9 |
| 1991 | 1 | 3 | 5 | 0 | 0 | 9 |
| 1992 | 0 | 8 | 7 | 0 | 0 | 15 |
| 1993 | 0 | 38 | 8 | 0 | 1 | 47 |
| 1994 | 1 | 133 | 14 | 0 | 1 | 149 |
| 1995 | 0 | 167 | 12 | 0 | 0 | 179 |
| 1996 | 4 | 149 | 15 | 0 | 0 | 168 |
| 1997 | 1 | 64 | 7 | 0 | 0 | 72 |
| 1998 | 0 | 204 | 13 | 0 | 2 | 219 |
| 1999 | 0 | 73 | 9 | 0 | 1 | 83 |
| 2000 | 1 | 261 | 13 | 0 | 0 | 275 |
| 2001 | 0 | 376 | 14 | 0 | 1 | 391 |
| 2002 | 0 | 209 | 15 | 0 | 1 | 225 |
| 2003 | 0 | 368 | 20 | 0 | 0 | 388 |
| 2004 | 0 | 205 | 19 | 0 | 1 | 225 |
| 2005 | 1 | 40 | 19 | 0 | 0 | 60 |
| 2006 | 1 | 67 | 46 | 0 | 2 | 116 |
| 2007 | 1 | 94 | 34 | 1 | 2 | 132 |
| 2008 | 1 | 94 | 40 | 0 | 0 | 135 |
| 2009 | 0 | 52 | 56 | 0 | 0 | 108 |
| 2010 | 4 | 87 | 70 | 0 | 0 | 161 |
| 2011 | 1 | 45 | 71 | 0 | 0 | 117 |
| 2012 | 4 | 100 | 70 | 0 | 1 | 175 |
| 2013 | 6 | 139 | 104 | 0 | 2 | 251 |
| 2014 | 7 | 188 | 147 | 0 | 0 | 342 |
| 2015 | 5 | 207 | 197 | 0 | 0 | 409 |
| 2016 | 4 | 280 | 189 | 0 | 0 | 473 |
| 2017 | 6 | 349 | 301 | 0 | 0 | 656 |
| 2018 | 8 | 295 | 282 | 0 | 1 | 586 |
| 2019 | 1 | 308 | 348 | 0 | 0 | 657 |
| 2020 | 1 | 387 | 374 | 0 | 0 | 762 |
| 2021 | 3 | 420 | 330 | 0 | 0 | 753 |
| 2022 | 3 | 459 | 442 | 0 | 0 | 904 |
| 2023 | 15 | 609 | 275 | 0 | 1 | 900 |
| 2024 | 3 | 605 | 272 | 0 | 1 | 881 |
| 2025 | 0 | 0 | 9 | 0 | 0 | 9 |
| Total | 83 | 7107 | 3890 | 1 | 20 | 11101 |