

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 3 | 13 | 0 | 0 | 18 |
| 1970 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1971 | 0 | 3 | 0 | 0 | 0 | 3 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1974 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1975 | 0 | 4 | 4 | 0 | 0 | 8 |
| 1976 | 2 | 2 | 4 | 0 | 0 | 8 |
| 1977 | 0 | 0 | 9 | 0 | 0 | 9 |
| 1978 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1979 | 0 | 3 | 5 | 0 | 0 | 8 |
| 1980 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1981 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1982 | 0 | 3 | 8 | 0 | 0 | 11 |
| 1983 | 0 | 0 | 6 | 0 | 0 | 6 |
| 1984 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1985 | 0 | 2 | 4 | 0 | 0 | 6 |
| 1986 | 0 | 7 | 8 | 0 | 0 | 15 |
| 1987 | 1 | 3 | 10 | 0 | 0 | 14 |
| 1988 | 0 | 9 | 9 | 0 | 0 | 18 |
| 1989 | 0 | 16 | 10 | 0 | 0 | 26 |
| 1990 | 0 | 49 | 23 | 0 | 0 | 72 |
| 1991 | 4 | 15 | 15 | 0 | 0 | 34 |
| 1992 | 3 | 13 | 23 | 0 | 0 | 39 |
| 1993 | 6 | 80 | 30 | 0 | 0 | 116 |
| 1994 | 13 | 106 | 49 | 0 | 0 | 168 |
| 1995 | 9 | 55 | 34 | 0 | 0 | 98 |
| 1996 | 18 | 51 | 18 | 0 | 0 | 87 |
| 1997 | 14 | 166 | 36 | 0 | 0 | 216 |
| 1998 | 9 | 171 | 38 | 0 | 0 | 218 |
| 1999 | 5 | 112 | 35 | 0 | 0 | 152 |
| 2000 | 7 | 138 | 40 | 0 | 0 | 185 |
| 2001 | 9 | 109 | 35 | 0 | 0 | 153 |
| 2002 | 3 | 102 | 75 | 0 | 0 | 180 |
| 2003 | 4 | 159 | 62 | 0 | 0 | 225 |
| 2004 | 8 | 235 | 57 | 0 | 0 | 300 |
| 2005 | 11 | 137 | 83 | 0 | 0 | 231 |
| 2006 | 9 | 139 | 114 | 0 | 0 | 262 |
| 2007 | 7 | 115 | 89 | 0 | 0 | 211 |
| 2008 | 11 | 85 | 144 | 0 | 0 | 240 |
| 2009 | 21 | 78 | 131 | 0 | 0 | 230 |
| 2010 | 21 | 45 | 245 | 0 | 0 | 311 |
| 2011 | 23 | 62 | 214 | 0 | 0 | 299 |
| 2012 | 46 | 269 | 180 | 0 | 0 | 495 |
| 2013 | 26 | 302 | 194 | 0 | 0 | 522 |
| 2014 | 27 | 377 | 193 | 0 | 0 | 597 |
| 2015 | 46 | 403 | 238 | 0 | 0 | 687 |
| 2016 | 28 | 520 | 284 | 0 | 0 | 832 |
| 2017 | 39 | 718 | 280 | 0 | 1 | 1038 |
| 2018 | 42 | 717 | 365 | 0 | 0 | 1124 |
| 2019 | 367 | 793 | 430 | 0 | 0 | 1590 |
| 2020 | 35 | 805 | 528 | 0 | 0 | 1368 |
| 2021 | 47 | 982 | 516 | 0 | 0 | 1545 |
| 2022 | 36 | 942 | 530 | 0 | 0 | 1508 |
| 2023 | 40 | 1140 | 261 | 0 | 3 | 1444 |
| 2024 | 63 | 1133 | 295 | 0 | 0 | 1491 |
| 2025 | 1 | 1 | 8 | 0 | 0 | 10 |
| Total | 1063 | 11384 | 6009 | 0 | 4 | 18460 |