

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 25 | 3 | 16 | 0 | 20 | 64 |
| 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 | 8 | 1 | 18 | 0 | 13 | 40 |
| 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 | 35 | 0 | 10 | 59 |
| 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 | 116 | 0 | 17 | 144 |
| 1998 | 6 | 7 | 107 | 0 | 9 | 129 |
| 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 | 177 | 1 | 17 | 211 |
| 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 | 286 | 0 | 28 | 405 |
| 2010 | 48 | 4 | 348 | 0 | 27 | 427 |
| 2011 | 77 | 2 | 349 | 0 | 36 | 464 |
| 2012 | 14 | 6 | 479 | 0 | 62 | 561 |
| 2013 | 15 | 15 | 475 | 1 | 47 | 553 |
| 2014 | 22 | 12 | 527 | 0 | 74 | 635 |
| 2015 | 26 | 6 | 641 | 0 | 93 | 766 |
| 2016 | 34 | 8 | 815 | 0 | 98 | 955 |
| 2017 | 34 | 11 | 885 | 1 | 100 | 1031 |
| 2018 | 27 | 6 | 1000 | 0 | 124 | 1157 |
| 2019 | 24 | 8 | 971 | 0 | 82 | 1085 |
| 2020 | 45 | 4 | 1023 | 0 | 81 | 1153 |
| 2021 | 45 | 15 | 1078 | 0 | 97 | 1235 |
| 2022 | 29 | 2 | 1097 | 0 | 111 | 1239 |
| 2023 | 31 | 8 | 1180 | 0 | 117 | 1336 |
| 2024 | 38 | 10 | 1273 | 0 | 121 | 1442 |
| 2025 | 16 | 5 | 62 | 0 | 5 | 88 |
| 2026 | 2 | 0 | 3 | 0 | 10 | 15 |
| Total | 1171 | 290 | 15052 | 3 | 1787 | 18303 |