

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 4 | 5 | 0 | 0 | 11 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1974 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1975 | 4 | 32 | 1 | 0 | 0 | 37 |
| 1976 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1977 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1978 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1979 | 0 | 8 | 3 | 0 | 0 | 11 |
| 1980 | 1 | 10 | 3 | 0 | 0 | 14 |
| 1981 | 1 | 3 | 6 | 0 | 0 | 10 |
| 1982 | 0 | 1 | 17 | 0 | 0 | 18 |
| 1983 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1984 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1985 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1986 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1987 | 1 | 3 | 1 | 0 | 0 | 5 |
| 1988 | 0 | 5 | 4 | 0 | 0 | 9 |
| 1989 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1990 | 2 | 8 | 2 | 0 | 0 | 12 |
| 1991 | 5 | 3 | 2 | 0 | 0 | 10 |
| 1992 | 1 | 2 | 2 | 0 | 0 | 5 |
| 1993 | 0 | 2 | 2 | 0 | 0 | 4 |
| 1994 | 2 | 17 | 7 | 0 | 0 | 26 |
| 1995 | 1 | 72 | 4 | 0 | 0 | 77 |
| 1996 | 3 | 16 | 2 | 0 | 0 | 21 |
| 1997 | 0 | 98 | 9 | 0 | 0 | 107 |
| 1998 | 0 | 39 | 10 | 0 | 0 | 49 |
| 1999 | 1 | 22 | 23 | 0 | 0 | 46 |
| 2000 | 0 | 16 | 15 | 0 | 0 | 31 |
| 2001 | 1 | 52 | 5 | 0 | 0 | 58 |
| 2002 | 0 | 45 | 15 | 0 | 0 | 60 |
| 2003 | 1 | 98 | 13 | 0 | 0 | 112 |
| 2004 | 2 | 150 | 19 | 0 | 0 | 171 |
| 2005 | 4 | 139 | 80 | 0 | 0 | 223 |
| 2006 | 0 | 128 | 15 | 0 | 0 | 143 |
| 2007 | 4 | 235 | 14 | 0 | 0 | 253 |
| 2008 | 0 | 150 | 19 | 0 | 0 | 169 |
| 2009 | 3 | 80 | 13 | 0 | 0 | 96 |
| 2010 | 1 | 156 | 38 | 0 | 0 | 195 |
| 2011 | 2 | 237 | 29 | 0 | 0 | 268 |
| 2012 | 1 | 273 | 62 | 0 | 0 | 336 |
| 2013 | 3 | 193 | 26 | 0 | 0 | 222 |
| 2014 | 1 | 223 | 15 | 0 | 0 | 239 |
| 2015 | 3 | 174 | 27 | 0 | 0 | 204 |
| 2016 | 1 | 109 | 38 | 0 | 0 | 148 |
| 2017 | 3 | 157 | 44 | 0 | 0 | 204 |
| 2018 | 1 | 149 | 62 | 0 | 0 | 212 |
| 2019 | 5 | 156 | 36 | 0 | 0 | 197 |
| 2020 | 12 | 96 | 43 | 0 | 0 | 151 |
| 2021 | 7 | 189 | 41 | 0 | 0 | 237 |
| 2022 | 9 | 181 | 53 | 0 | 0 | 243 |
| 2023 | 16 | 238 | 32 | 0 | 0 | 286 |
| 2024 | 3 | 205 | 51 | 0 | 0 | 259 |
| 2025 | 0 | 59 | 2 | 0 | 0 | 61 |
| 2026 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 107 | 4234 | 925 | 0 | 0 | 5266 |