

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 2 | 30 | 0 | 46 | 78 |
| 1970 | 0 | 0 | 5 | 0 | 3 | 8 |
| 1971 | 0 | 0 | 9 | 0 | 3 | 12 |
| 1972 | 0 | 0 | 4 | 0 | 1 | 5 |
| 1973 | 0 | 0 | 8 | 0 | 3 | 11 |
| 1974 | 0 | 1 | 8 | 0 | 2 | 11 |
| 1975 | 0 | 1 | 8 | 0 | 3 | 12 |
| 1976 | 0 | 0 | 10 | 0 | 5 | 15 |
| 1977 | 0 | 0 | 13 | 0 | 8 | 21 |
| 1978 | 1 | 0 | 10 | 0 | 5 | 16 |
| 1979 | 3 | 1 | 18 | 0 | 6 | 28 |
| 1980 | 4 | 1 | 12 | 0 | 8 | 25 |
| 1981 | 2 | 0 | 13 | 0 | 13 | 28 |
| 1982 | 1 | 0 | 18 | 0 | 13 | 32 |
| 1983 | 0 | 1 | 18 | 0 | 6 | 25 |
| 1984 | 0 | 1 | 10 | 0 | 11 | 22 |
| 1985 | 1 | 1 | 8 | 0 | 6 | 16 |
| 1986 | 1 | 3 | 21 | 0 | 9 | 34 |
| 1987 | 0 | 0 | 23 | 0 | 6 | 29 |
| 1988 | 2 | 1 | 21 | 0 | 10 | 34 |
| 1989 | 1 | 8 | 32 | 0 | 9 | 50 |
| 1990 | 4 | 30 | 62 | 0 | 9 | 105 |
| 1991 | 4 | 25 | 72 | 0 | 9 | 110 |
| 1992 | 5 | 9 | 61 | 0 | 10 | 85 |
| 1993 | 10 | 27 | 91 | 0 | 10 | 138 |
| 1994 | 10 | 53 | 138 | 0 | 17 | 218 |
| 1995 | 6 | 24 | 101 | 0 | 17 | 148 |
| 1996 | 3 | 39 | 80 | 0 | 9 | 131 |
| 1997 | 3 | 33 | 133 | 0 | 15 | 184 |
| 1998 | 3 | 44 | 139 | 0 | 18 | 204 |
| 1999 | 2 | 32 | 110 | 0 | 14 | 158 |
| 2000 | 3 | 31 | 177 | 0 | 16 | 227 |
| 2001 | 8 | 10 | 166 | 1 | 20 | 205 |
| 2002 | 1 | 3 | 182 | 0 | 11 | 197 |
| 2003 | 4 | 16 | 241 | 0 | 10 | 271 |
| 2004 | 4 | 20 | 287 | 0 | 11 | 322 |
| 2005 | 2 | 5 | 213 | 0 | 14 | 234 |
| 2006 | 2 | 12 | 282 | 1 | 14 | 311 |
| 2007 | 3 | 11 | 254 | 2 | 20 | 290 |
| 2008 | 1 | 25 | 288 | 4 | 17 | 335 |
| 2009 | 2 | 14 | 327 | 0 | 11 | 354 |
| 2010 | 8 | 7 | 359 | 0 | 15 | 389 |
| 2011 | 7 | 14 | 374 | 0 | 18 | 413 |
| 2012 | 5 | 24 | 434 | 0 | 53 | 516 |
| 2013 | 9 | 12 | 813 | 0 | 39 | 873 |
| 2014 | 18 | 47 | 831 | 0 | 67 | 963 |
| 2015 | 13 | 18 | 993 | 0 | 106 | 1130 |
| 2016 | 23 | 15 | 1135 | 0 | 128 | 1301 |
| 2017 | 23 | 44 | 1447 | 0 | 109 | 1623 |
| 2018 | 18 | 35 | 1484 | 0 | 91 | 1628 |
| 2019 | 21 | 23 | 1446 | 0 | 111 | 1601 |
| 2020 | 15 | 24 | 1890 | 0 | 120 | 2049 |
| 2021 | 13 | 14 | 1619 | 0 | 133 | 1779 |
| 2022 | 25 | 14 | 2113 | 0 | 123 | 2275 |
| 2023 | 25 | 35 | 2127 | 0 | 123 | 2310 |
| 2024 | 25 | 40 | 2355 | 0 | 196 | 2616 |
| 2025 | 1 | 4 | 21 | 0 | 2 | 28 |
| Total | 345 | 854 | 23144 | 8 | 1882 | 26233 |