

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 0 | 29 | 0 | 59 | 90 |
| 1970 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1971 | 0 | 0 | 0 | 0 | 5 | 5 |
| 1972 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1973 | 0 | 0 | 0 | 0 | 4 | 4 |
| 1974 | 0 | 2 | 5 | 0 | 5 | 12 |
| 1975 | 0 | 1 | 4 | 0 | 6 | 11 |
| 1976 | 0 | 3 | 4 | 0 | 11 | 18 |
| 1977 | 2 | 1 | 3 | 0 | 11 | 17 |
| 1978 | 0 | 2 | 7 | 0 | 10 | 19 |
| 1979 | 0 | 0 | 6 | 0 | 12 | 18 |
| 1980 | 1 | 0 | 5 | 0 | 9 | 15 |
| 1981 | 0 | 0 | 7 | 0 | 18 | 25 |
| 1982 | 0 | 1 | 12 | 0 | 19 | 32 |
| 1983 | 0 | 0 | 6 | 0 | 16 | 22 |
| 1984 | 0 | 0 | 6 | 0 | 16 | 22 |
| 1985 | 1 | 1 | 7 | 0 | 15 | 24 |
| 1986 | 1 | 4 | 16 | 1 | 17 | 39 |
| 1987 | 1 | 4 | 14 | 0 | 17 | 36 |
| 1988 | 0 | 3 | 24 | 0 | 19 | 46 |
| 1989 | 5 | 5 | 11 | 0 | 20 | 41 |
| 1990 | 3 | 9 | 20 | 0 | 19 | 51 |
| 1991 | 14 | 13 | 103 | 0 | 16 | 146 |
| 1992 | 11 | 13 | 55 | 0 | 18 | 97 |
| 1993 | 13 | 12 | 156 | 0 | 20 | 201 |
| 1994 | 11 | 15 | 109 | 1 | 23 | 159 |
| 1995 | 13 | 11 | 81 | 0 | 19 | 124 |
| 1996 | 12 | 11 | 69 | 0 | 16 | 108 |
| 1997 | 16 | 9 | 73 | 0 | 23 | 121 |
| 1998 | 17 | 16 | 79 | 0 | 22 | 134 |
| 1999 | 14 | 7 | 44 | 0 | 18 | 83 |
| 2000 | 6 | 14 | 100 | 0 | 28 | 148 |
| 2001 | 12 | 3 | 84 | 0 | 25 | 124 |
| 2002 | 3 | 1 | 101 | 0 | 14 | 119 |
| 2003 | 10 | 2 | 143 | 0 | 19 | 174 |
| 2004 | 6 | 2 | 98 | 0 | 20 | 126 |
| 2005 | 4 | 2 | 107 | 0 | 31 | 144 |
| 2006 | 7 | 4 | 148 | 0 | 22 | 181 |
| 2007 | 7 | 4 | 143 | 1 | 26 | 181 |
| 2008 | 4 | 0 | 170 | 3 | 18 | 195 |
| 2009 | 1 | 0 | 140 | 0 | 34 | 175 |
| 2010 | 8 | 2 | 186 | 0 | 25 | 221 |
| 2011 | 1 | 0 | 188 | 0 | 31 | 220 |
| 2012 | 7 | 1 | 299 | 0 | 54 | 361 |
| 2013 | 23 | 27 | 414 | 0 | 49 | 513 |
| 2014 | 13 | 6 | 496 | 0 | 55 | 570 |
| 2015 | 38 | 7 | 601 | 2 | 102 | 750 |
| 2016 | 20 | 8 | 742 | 1 | 143 | 914 |
| 2017 | 24 | 21 | 859 | 1 | 112 | 1017 |
| 2018 | 34 | 12 | 878 | 0 | 138 | 1062 |
| 2019 | 43 | 21 | 968 | 0 | 143 | 1175 |
| 2020 | 30 | 11 | 1164 | 1 | 178 | 1384 |
| 2021 | 41 | 9 | 1212 | 2 | 135 | 1399 |
| 2022 | 24 | 8 | 1480 | 0 | 201 | 1713 |
| 2023 | 28 | 10 | 1226 | 0 | 192 | 1456 |
| 2024 | 50 | 7 | 1424 | 0 | 218 | 1699 |
| 2025 | 0 | 2 | 44 | 0 | 0 | 46 |
| Total | 581 | 327 | 14373 | 13 | 2501 | 17795 |