

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 8 | 0 | 25 | 34 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 3 | 0 | 4 | 7 |
| 1972 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1973 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1974 | 0 | 0 | 0 | 0 | 5 | 5 |
| 1975 | 0 | 1 | 3 | 0 | 3 | 7 |
| 1976 | 0 | 0 | 3 | 0 | 4 | 7 |
| 1977 | 0 | 0 | 5 | 0 | 3 | 8 |
| 1978 | 0 | 0 | 4 | 0 | 6 | 10 |
| 1979 | 0 | 0 | 9 | 0 | 5 | 14 |
| 1980 | 0 | 1 | 10 | 0 | 9 | 20 |
| 1981 | 1 | 0 | 3 | 0 | 6 | 10 |
| 1982 | 0 | 0 | 13 | 0 | 12 | 25 |
| 1983 | 0 | 0 | 6 | 0 | 7 | 13 |
| 1984 | 0 | 0 | 6 | 0 | 6 | 12 |
| 1985 | 0 | 0 | 5 | 0 | 10 | 15 |
| 1986 | 1 | 0 | 7 | 0 | 7 | 15 |
| 1987 | 0 | 0 | 13 | 0 | 7 | 20 |
| 1988 | 2 | 4 | 17 | 0 | 10 | 33 |
| 1989 | 0 | 4 | 27 | 0 | 8 | 39 |
| 1990 | 0 | 9 | 8 | 0 | 6 | 23 |
| 1991 | 0 | 9 | 14 | 0 | 7 | 30 |
| 1992 | 2 | 44 | 13 | 1 | 9 | 69 |
| 1993 | 2 | 171 | 68 | 0 | 11 | 252 |
| 1994 | 2 | 632 | 133 | 0 | 12 | 779 |
| 1995 | 2 | 508 | 88 | 1 | 15 | 614 |
| 1996 | 0 | 1168 | 76 | 0 | 9 | 1253 |
| 1997 | 0 | 360 | 86 | 0 | 14 | 460 |
| 1998 | 2 | 571 | 15 | 0 | 10 | 598 |
| 1999 | 0 | 33 | 11 | 0 | 8 | 52 |
| 2000 | 3 | 611 | 45 | 0 | 17 | 676 |
| 2001 | 1 | 330 | 39 | 0 | 19 | 389 |
| 2002 | 1 | 480 | 33 | 0 | 11 | 525 |
| 2003 | 0 | 344 | 46 | 0 | 13 | 403 |
| 2004 | 1 | 525 | 38 | 0 | 14 | 578 |
| 2005 | 0 | 46 | 37 | 0 | 16 | 99 |
| 2006 | 1 | 323 | 44 | 0 | 21 | 389 |
| 2007 | 4 | 573 | 57 | 1 | 14 | 649 |
| 2008 | 0 | 198 | 58 | 2 | 11 | 269 |
| 2009 | 1 | 48 | 54 | 1 | 14 | 118 |
| 2010 | 3 | 184 | 136 | 0 | 14 | 337 |
| 2011 | 2 | 167 | 104 | 0 | 28 | 301 |
| 2012 | 1 | 245 | 267 | 0 | 30 | 543 |
| 2013 | 0 | 30 | 336 | 1 | 32 | 399 |
| 2014 | 1 | 79 | 365 | 0 | 39 | 484 |
| 2015 | 1 | 16 | 529 | 1 | 121 | 668 |
| 2016 | 4 | 18 | 611 | 0 | 63 | 696 |
| 2017 | 10 | 32 | 1112 | 0 | 167 | 1321 |
| 2018 | 5 | 14 | 674 | 1 | 106 | 800 |
| 2019 | 3 | 22 | 716 | 3 | 84 | 828 |
| 2020 | 2 | 9 | 1094 | 0 | 73 | 1178 |
| 2021 | 3 | 4 | 1426 | 0 | 197 | 1630 |
| 2022 | 5 | 10 | 1821 | 0 | 177 | 2013 |
| 2023 | 8 | 10 | 1338 | 0 | 165 | 1521 |
| 2024 | 3 | 9 | 838 | 0 | 36 | 886 |
| 2025 | 0 | 2 | 15 | 0 | 2 | 19 |
| Total | 77 | 7845 | 12489 | 12 | 1729 | 22152 |