

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 26 | 3 | 13 | 0 | 20 | 62 |
| 1970 | 13 | 2 | 3 | 0 | 1 | 19 |
| 1971 | 3 | 1 | 1 | 0 | 3 | 8 |
| 1972 | 5 | 0 | 1 | 0 | 2 | 8 |
| 1973 | 4 | 0 | 3 | 0 | 2 | 9 |
| 1974 | 5 | 0 | 6 | 0 | 2 | 13 |
| 1975 | 18 | 0 | 8 | 0 | 4 | 30 |
| 1976 | 20 | 0 | 8 | 0 | 5 | 33 |
| 1977 | 9 | 5 | 7 | 0 | 6 | 27 |
| 1978 | 35 | 2 | 6 | 0 | 7 | 50 |
| 1979 | 43 | 4 | 18 | 0 | 7 | 72 |
| 1980 | 16 | 1 | 10 | 0 | 7 | 34 |
| 1981 | 9 | 1 | 18 | 0 | 13 | 41 |
| 1982 | 4 | 5 | 10 | 0 | 15 | 34 |
| 1983 | 7 | 4 | 14 | 0 | 5 | 30 |
| 1984 | 5 | 2 | 7 | 0 | 11 | 25 |
| 1985 | 11 | 5 | 12 | 0 | 11 | 39 |
| 1986 | 14 | 8 | 20 | 0 | 12 | 54 |
| 1987 | 14 | 9 | 26 | 0 | 16 | 65 |
| 1988 | 38 | 22 | 29 | 0 | 16 | 105 |
| 1989 | 11 | 5 | 25 | 0 | 13 | 54 |
| 1990 | 6 | 8 | 34 | 0 | 10 | 58 |
| 1991 | 35 | 5 | 55 | 0 | 8 | 103 |
| 1992 | 9 | 4 | 49 | 0 | 12 | 74 |
| 1993 | 23 | 9 | 90 | 0 | 12 | 134 |
| 1994 | 28 | 2 | 136 | 0 | 17 | 183 |
| 1995 | 14 | 13 | 99 | 0 | 16 | 142 |
| 1996 | 9 | 5 | 88 | 0 | 12 | 114 |
| 1997 | 9 | 2 | 117 | 0 | 17 | 145 |
| 1998 | 6 | 7 | 108 | 0 | 9 | 130 |
| 1999 | 22 | 1 | 56 | 0 | 14 | 93 |
| 2000 | 7 | 0 | 110 | 0 | 21 | 138 |
| 2001 | 10 | 2 | 100 | 0 | 16 | 128 |
| 2002 | 9 | 3 | 129 | 0 | 17 | 158 |
| 2003 | 12 | 4 | 178 | 1 | 17 | 212 |
| 2004 | 6 | 2 | 128 | 0 | 16 | 152 |
| 2005 | 10 | 6 | 195 | 0 | 18 | 229 |
| 2006 | 19 | 2 | 220 | 0 | 23 | 264 |
| 2007 | 5 | 4 | 199 | 0 | 22 | 230 |
| 2008 | 8 | 8 | 223 | 0 | 19 | 258 |
| 2009 | 89 | 2 | 287 | 0 | 28 | 406 |
| 2010 | 48 | 4 | 348 | 0 | 27 | 427 |
| 2011 | 77 | 2 | 349 | 0 | 36 | 464 |
| 2012 | 14 | 8 | 513 | 0 | 62 | 597 |
| 2013 | 15 | 18 | 526 | 1 | 50 | 610 |
| 2014 | 31 | 13 | 585 | 0 | 81 | 710 |
| 2015 | 35 | 7 | 750 | 0 | 110 | 902 |
| 2016 | 51 | 8 | 995 | 0 | 120 | 1174 |
| 2017 | 41 | 12 | 1097 | 1 | 113 | 1264 |
| 2018 | 44 | 6 | 1216 | 0 | 137 | 1403 |
| 2019 | 27 | 8 | 1220 | 0 | 89 | 1344 |
| 2020 | 47 | 4 | 1312 | 0 | 87 | 1450 |
| 2021 | 51 | 15 | 1349 | 0 | 107 | 1522 |
| 2022 | 36 | 2 | 1512 | 0 | 124 | 1674 |
| 2023 | 37 | 8 | 1460 | 0 | 134 | 1639 |
| 2024 | 41 | 10 | 1640 | 0 | 134 | 1825 |
| 2025 | 14 | 5 | 47 | 0 | 4 | 70 |
| Total | 1255 | 298 | 17765 | 3 | 1917 | 21238 |