

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 10 | 0 | 83 | 93 |
| 1970 | 0 | 0 | 2 | 0 | 3 | 5 |
| 1971 | 0 | 0 | 0 | 0 | 10 | 10 |
| 1972 | 0 | 0 | 0 | 0 | 7 | 7 |
| 1973 | 0 | 0 | 1 | 0 | 5 | 6 |
| 1974 | 0 | 0 | 2 | 0 | 5 | 7 |
| 1975 | 0 | 0 | 1 | 0 | 8 | 9 |
| 1976 | 0 | 0 | 1 | 0 | 16 | 17 |
| 1977 | 0 | 0 | 3 | 0 | 13 | 16 |
| 1978 | 0 | 0 | 8 | 0 | 17 | 25 |
| 1979 | 0 | 0 | 7 | 0 | 14 | 21 |
| 1980 | 0 | 0 | 3 | 0 | 15 | 18 |
| 1981 | 0 | 0 | 1 | 0 | 20 | 21 |
| 1982 | 0 | 0 | 7 | 0 | 20 | 27 |
| 1983 | 0 | 0 | 2 | 0 | 16 | 18 |
| 1984 | 0 | 0 | 1 | 0 | 17 | 18 |
| 1985 | 0 | 0 | 1 | 2 | 13 | 16 |
| 1986 | 0 | 0 | 5 | 0 | 21 | 26 |
| 1987 | 0 | 0 | 12 | 2 | 27 | 41 |
| 1988 | 0 | 0 | 11 | 0 | 24 | 35 |
| 1989 | 0 | 0 | 5 | 2 | 18 | 25 |
| 1990 | 0 | 0 | 11 | 6 | 18 | 35 |
| 1991 | 0 | 0 | 57 | 3 | 22 | 82 |
| 1992 | 0 | 0 | 48 | 0 | 22 | 70 |
| 1993 | 0 | 0 | 31 | 0 | 46 | 77 |
| 1994 | 0 | 0 | 49 | 2 | 36 | 87 |
| 1995 | 0 | 0 | 51 | 2 | 35 | 88 |
| 1996 | 0 | 0 | 52 | 0 | 30 | 82 |
| 1997 | 0 | 0 | 44 | 4 | 36 | 84 |
| 1998 | 0 | 0 | 38 | 0 | 47 | 85 |
| 1999 | 0 | 0 | 30 | 0 | 29 | 59 |
| 2000 | 0 | 0 | 36 | 0 | 48 | 84 |
| 2001 | 0 | 0 | 52 | 2 | 53 | 107 |
| 2002 | 0 | 0 | 53 | 1 | 41 | 95 |
| 2003 | 0 | 0 | 45 | 0 | 34 | 79 |
| 2004 | 0 | 0 | 20 | 0 | 40 | 60 |
| 2005 | 0 | 0 | 47 | 0 | 36 | 83 |
| 2006 | 0 | 0 | 72 | 0 | 48 | 120 |
| 2007 | 0 | 0 | 60 | 5 | 75 | 140 |
| 2008 | 0 | 0 | 99 | 17 | 53 | 169 |
| 2009 | 0 | 0 | 101 | 0 | 94 | 195 |
| 2010 | 0 | 0 | 65 | 1 | 80 | 146 |
| 2011 | 0 | 0 | 213 | 1 | 112 | 326 |
| 2012 | 0 | 0 | 336 | 29 | 246 | 611 |
| 2013 | 0 | 0 | 355 | 33 | 295 | 683 |
| 2014 | 0 | 0 | 425 | 4 | 309 | 738 |
| 2015 | 0 | 0 | 591 | 1 | 453 | 1045 |
| 2016 | 0 | 0 | 660 | 2 | 573 | 1235 |
| 2017 | 0 | 0 | 888 | 0 | 737 | 1625 |
| 2018 | 0 | 0 | 1068 | 1 | 800 | 1869 |
| 2019 | 0 | 0 | 927 | 6 | 549 | 1482 |
| 2020 | 0 | 0 | 843 | 1 | 582 | 1426 |
| 2021 | 0 | 0 | 727 | 0 | 707 | 1434 |
| 2022 | 0 | 0 | 862 | 2 | 775 | 1639 |
| 2023 | 0 | 0 | 578 | 0 | 530 | 1108 |
| 2024 | 0 | 0 | 727 | 0 | 624 | 1351 |
| 2025 | 0 | 0 | 13 | 0 | 17 | 30 |
| Total | 0 | 0 | 10357 | 129 | 8604 | 19090 |