

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 13 | 0 | 5 | 0 | 11 | 29 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1974 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1975 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1976 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1977 | 2 | 0 | 3 | 0 | 0 | 5 |
| 1978 | 4 | 1 | 9 | 0 | 1 | 15 |
| 1979 | 21 | 1 | 12 | 0 | 1 | 35 |
| 1980 | 8 | 0 | 13 | 0 | 2 | 23 |
| 1981 | 16 | 3 | 4 | 0 | 1 | 24 |
| 1982 | 20 | 8 | 8 | 0 | 0 | 36 |
| 1983 | 13 | 10 | 49 | 0 | 1 | 73 |
| 1984 | 22 | 13 | 35 | 0 | 0 | 70 |
| 1985 | 7 | 116 | 19 | 0 | 0 | 142 |
| 1986 | 3 | 36 | 15 | 0 | 0 | 54 |
| 1987 | 16 | 3 | 36 | 0 | 0 | 55 |
| 1988 | 35 | 2 | 37 | 0 | 1 | 75 |
| 1989 | 0 | 2 | 25 | 0 | 0 | 27 |
| 1990 | 22 | 7 | 17 | 0 | 1 | 47 |
| 1991 | 39 | 2 | 44 | 0 | 0 | 85 |
| 1992 | 69 | 8 | 51 | 0 | 4 | 132 |
| 1993 | 20 | 11 | 88 | 0 | 0 | 119 |
| 1994 | 24 | 42 | 81 | 0 | 0 | 147 |
| 1995 | 10 | 3 | 28 | 0 | 0 | 41 |
| 1996 | 8 | 9 | 65 | 0 | 0 | 82 |
| 1997 | 46 | 16 | 101 | 0 | 0 | 163 |
| 1998 | 15 | 12 | 97 | 1 | 5 | 130 |
| 1999 | 11 | 14 | 98 | 0 | 3 | 126 |
| 2000 | 40 | 28 | 100 | 0 | 2 | 170 |
| 2001 | 47 | 4 | 62 | 0 | 1 | 114 |
| 2002 | 7 | 6 | 69 | 1 | 2 | 85 |
| 2003 | 26 | 3 | 64 | 0 | 0 | 93 |
| 2004 | 11 | 12 | 52 | 0 | 0 | 75 |
| 2005 | 10 | 4 | 49 | 0 | 2 | 65 |
| 2006 | 22 | 3 | 50 | 0 | 2 | 77 |
| 2007 | 7 | 3 | 70 | 0 | 0 | 80 |
| 2008 | 9 | 6 | 63 | 0 | 2 | 80 |
| 2009 | 4 | 4 | 60 | 0 | 2 | 70 |
| 2010 | 9 | 1 | 85 | 0 | 4 | 99 |
| 2011 | 7 | 9 | 104 | 0 | 3 | 123 |
| 2012 | 20 | 9 | 96 | 0 | 10 | 135 |
| 2013 | 26 | 5 | 132 | 0 | 7 | 170 |
| 2014 | 35 | 9 | 161 | 0 | 9 | 214 |
| 2015 | 62 | 12 | 305 | 0 | 11 | 390 |
| 2016 | 90 | 6 | 355 | 0 | 27 | 478 |
| 2017 | 62 | 13 | 485 | 0 | 11 | 571 |
| 2018 | 47 | 23 | 352 | 0 | 16 | 438 |
| 2019 | 25 | 8 | 389 | 0 | 12 | 434 |
| 2020 | 18 | 7 | 290 | 1 | 27 | 343 |
| 2021 | 21 | 1 | 369 | 0 | 7 | 398 |
| 2022 | 22 | 1 | 386 | 0 | 14 | 423 |
| 2023 | 30 | 10 | 415 | 0 | 26 | 481 |
| 2024 | 29 | 6 | 403 | 0 | 19 | 457 |
| 2025 | 6 | 0 | 14 | 0 | 1 | 21 |
| Total | 1136 | 512 | 5925 | 3 | 251 | 7827 |