

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 3 | 9 | 0 | 40 | 52 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1972 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1973 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1974 | 0 | 1 | 4 | 0 | 3 | 8 |
| 1975 | 0 | 0 | 0 | 0 | 5 | 5 |
| 1976 | 0 | 2 | 0 | 0 | 5 | 7 |
| 1977 | 0 | 1 | 2 | 0 | 6 | 9 |
| 1978 | 0 | 1 | 0 | 0 | 5 | 6 |
| 1979 | 0 | 1 | 1 | 0 | 7 | 9 |
| 1980 | 0 | 1 | 1 | 0 | 5 | 7 |
| 1981 | 0 | 0 | 5 | 0 | 11 | 16 |
| 1982 | 0 | 0 | 4 | 0 | 9 | 13 |
| 1983 | 0 | 0 | 1 | 0 | 7 | 8 |
| 1984 | 0 | 0 | 1 | 0 | 8 | 9 |
| 1985 | 0 | 1 | 4 | 0 | 9 | 14 |
| 1986 | 0 | 2 | 8 | 0 | 9 | 19 |
| 1987 | 0 | 1 | 15 | 0 | 11 | 27 |
| 1988 | 0 | 1 | 19 | 0 | 13 | 33 |
| 1989 | 0 | 4 | 10 | 0 | 8 | 22 |
| 1990 | 1 | 13 | 8 | 0 | 8 | 30 |
| 1991 | 1 | 6 | 8 | 0 | 7 | 22 |
| 1992 | 2 | 57 | 4 | 0 | 10 | 73 |
| 1993 | 0 | 82 | 7 | 0 | 10 | 99 |
| 1994 | 3 | 755 | 24 | 0 | 16 | 798 |
| 1995 | 2 | 779 | 26 | 1 | 17 | 825 |
| 1996 | 0 | 672 | 10 | 0 | 6 | 688 |
| 1997 | 0 | 224 | 13 | 0 | 13 | 250 |
| 1998 | 0 | 445 | 8 | 0 | 11 | 464 |
| 1999 | 0 | 40 | 10 | 0 | 11 | 61 |
| 2000 | 0 | 606 | 29 | 0 | 17 | 652 |
| 2001 | 0 | 179 | 25 | 0 | 22 | 226 |
| 2002 | 0 | 349 | 21 | 0 | 14 | 384 |
| 2003 | 0 | 115 | 18 | 0 | 6 | 139 |
| 2004 | 0 | 390 | 13 | 0 | 12 | 415 |
| 2005 | 1 | 124 | 24 | 0 | 16 | 165 |
| 2006 | 0 | 210 | 18 | 0 | 20 | 248 |
| 2007 | 2 | 288 | 31 | 0 | 11 | 332 |
| 2008 | 0 | 95 | 38 | 0 | 9 | 142 |
| 2009 | 0 | 6 | 43 | 0 | 18 | 67 |
| 2010 | 0 | 80 | 54 | 0 | 15 | 149 |
| 2011 | 0 | 60 | 54 | 0 | 17 | 131 |
| 2012 | 2 | 257 | 107 | 0 | 21 | 387 |
| 2013 | 1 | 146 | 112 | 0 | 19 | 278 |
| 2014 | 0 | 204 | 133 | 0 | 29 | 366 |
| 2015 | 3 | 258 | 192 | 0 | 43 | 496 |
| 2016 | 5 | 239 | 311 | 0 | 44 | 599 |
| 2017 | 5 | 268 | 287 | 0 | 55 | 615 |
| 2018 | 2 | 279 | 315 | 0 | 60 | 656 |
| 2019 | 3 | 244 | 309 | 0 | 67 | 623 |
| 2020 | 2 | 282 | 362 | 0 | 40 | 686 |
| 2021 | 0 | 231 | 352 | 0 | 53 | 636 |
| 2022 | 1 | 269 | 504 | 0 | 55 | 829 |
| 2023 | 2 | 380 | 393 | 0 | 84 | 859 |
| 2024 | 5 | 654 | 551 | 0 | 51 | 1261 |
| 2025 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 43 | 9305 | 4500 | 1 | 1076 | 14925 |