

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 0 | 25 | 0 | 2 | 29 |
| 1970 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1971 | 1 | 0 | 6 | 0 | 0 | 7 |
| 1972 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1973 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1974 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1975 | 2 | 0 | 6 | 0 | 0 | 8 |
| 1976 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1977 | 5 | 0 | 8 | 0 | 0 | 13 |
| 1978 | 8 | 0 | 11 | 0 | 0 | 19 |
| 1979 | 12 | 2 | 19 | 0 | 0 | 33 |
| 1980 | 4 | 0 | 4 | 0 | 0 | 8 |
| 1981 | 8 | 3 | 8 | 0 | 0 | 19 |
| 1982 | 5 | 1 | 8 | 0 | 0 | 14 |
| 1983 | 6 | 3 | 4 | 0 | 0 | 13 |
| 1984 | 6 | 2 | 9 | 0 | 0 | 17 |
| 1985 | 5 | 1 | 8 | 0 | 0 | 14 |
| 1986 | 8 | 4 | 15 | 0 | 0 | 27 |
| 1987 | 5 | 3 | 19 | 0 | 0 | 27 |
| 1988 | 8 | 3 | 21 | 0 | 0 | 32 |
| 1989 | 10 | 6 | 38 | 0 | 0 | 54 |
| 1990 | 54 | 20 | 54 | 0 | 0 | 128 |
| 1991 | 66 | 7 | 61 | 0 | 0 | 134 |
| 1992 | 44 | 5 | 77 | 0 | 0 | 126 |
| 1993 | 75 | 8 | 239 | 0 | 0 | 322 |
| 1994 | 10 | 15 | 227 | 0 | 0 | 252 |
| 1995 | 23 | 1 | 175 | 0 | 0 | 199 |
| 1996 | 13 | 8 | 135 | 0 | 0 | 156 |
| 1997 | 17 | 4 | 161 | 0 | 0 | 182 |
| 1998 | 11 | 17 | 96 | 0 | 0 | 124 |
| 1999 | 10 | 5 | 86 | 0 | 1 | 102 |
| 2000 | 9 | 11 | 118 | 0 | 0 | 138 |
| 2001 | 23 | 2 | 120 | 0 | 0 | 145 |
| 2002 | 19 | 1 | 179 | 0 | 0 | 199 |
| 2003 | 18 | 2 | 202 | 0 | 1 | 223 |
| 2004 | 10 | 11 | 121 | 0 | 0 | 142 |
| 2005 | 5 | 4 | 183 | 0 | 0 | 192 |
| 2006 | 29 | 2 | 185 | 0 | 0 | 216 |
| 2007 | 30 | 8 | 230 | 0 | 0 | 268 |
| 2008 | 32 | 14 | 246 | 0 | 0 | 292 |
| 2009 | 84 | 59 | 263 | 0 | 0 | 406 |
| 2010 | 66 | 43 | 339 | 0 | 0 | 448 |
| 2011 | 31 | 13 | 344 | 0 | 0 | 388 |
| 2012 | 133 | 23 | 435 | 0 | 0 | 591 |
| 2013 | 119 | 43 | 508 | 0 | 0 | 670 |
| 2014 | 152 | 43 | 565 | 0 | 0 | 760 |
| 2015 | 181 | 16 | 736 | 0 | 0 | 933 |
| 2016 | 196 | 5 | 863 | 0 | 1 | 1065 |
| 2017 | 258 | 20 | 995 | 0 | 0 | 1273 |
| 2018 | 248 | 32 | 1096 | 0 | 2 | 1378 |
| 2019 | 241 | 46 | 1228 | 0 | 0 | 1515 |
| 2020 | 233 | 19 | 1401 | 0 | 0 | 1653 |
| 2021 | 268 | 22 | 1618 | 0 | 0 | 1908 |
| 2022 | 183 | 27 | 1751 | 0 | 0 | 1961 |
| 2023 | 246 | 22 | 1547 | 0 | 0 | 1815 |
| 2024 | 239 | 26 | 1756 | 0 | 0 | 2021 |
| 2025 | 40 | 1 | 49 | 0 | 0 | 90 |
| Total | 3511 | 633 | 18616 | 0 | 7 | 22767 |