

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 2 | 13 | 0 | 0 | 17 |
| 1970 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1971 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1972 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1973 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1974 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1975 | 3 | 47 | 0 | 0 | 0 | 50 |
| 1976 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1977 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1978 | 1 | 0 | 0 | 0 | 0 | 1 |
| 1979 | 0 | 10 | 5 | 0 | 0 | 15 |
| 1980 | 2 | 13 | 3 | 0 | 0 | 18 |
| 1981 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1982 | 0 | 2 | 4 | 0 | 0 | 6 |
| 1983 | 0 | 0 | 4 | 0 | 0 | 4 |
| 1984 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1985 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1986 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1987 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1988 | 1 | 7 | 3 | 0 | 0 | 11 |
| 1989 | 0 | 5 | 11 | 0 | 0 | 16 |
| 1990 | 3 | 12 | 6 | 0 | 0 | 21 |
| 1991 | 5 | 7 | 9 | 0 | 0 | 21 |
| 1992 | 0 | 5 | 4 | 0 | 0 | 9 |
| 1993 | 1 | 7 | 6 | 0 | 0 | 14 |
| 1994 | 0 | 28 | 10 | 0 | 0 | 38 |
| 1995 | 5 | 195 | 11 | 0 | 0 | 211 |
| 1996 | 4 | 36 | 4 | 0 | 0 | 44 |
| 1997 | 1 | 315 | 9 | 0 | 0 | 325 |
| 1998 | 2 | 109 | 9 | 0 | 0 | 120 |
| 1999 | 4 | 65 | 21 | 0 | 0 | 90 |
| 2000 | 3 | 88 | 17 | 0 | 0 | 108 |
| 2001 | 4 | 272 | 6 | 0 | 0 | 282 |
| 2002 | 0 | 267 | 27 | 0 | 0 | 294 |
| 2003 | 20 | 346 | 22 | 0 | 0 | 388 |
| 2004 | 9 | 439 | 35 | 0 | 0 | 483 |
| 2005 | 4 | 254 | 27 | 0 | 0 | 285 |
| 2006 | 13 | 308 | 21 | 0 | 0 | 342 |
| 2007 | 17 | 596 | 44 | 0 | 0 | 657 |
| 2008 | 7 | 348 | 44 | 0 | 0 | 399 |
| 2009 | 7 | 184 | 39 | 0 | 0 | 230 |
| 2010 | 8 | 688 | 44 | 0 | 0 | 740 |
| 2011 | 3 | 718 | 63 | 0 | 0 | 784 |
| 2012 | 9 | 828 | 79 | 0 | 0 | 916 |
| 2013 | 8 | 270 | 47 | 0 | 0 | 325 |
| 2014 | 1 | 188 | 23 | 0 | 1 | 213 |
| 2015 | 4 | 268 | 29 | 0 | 0 | 301 |
| 2016 | 2 | 229 | 57 | 0 | 0 | 288 |
| 2017 | 22 | 446 | 56 | 0 | 0 | 524 |
| 2018 | 8 | 336 | 54 | 0 | 0 | 398 |
| 2019 | 8 | 292 | 50 | 0 | 0 | 350 |
| 2020 | 12 | 270 | 77 | 0 | 0 | 359 |
| 2021 | 8 | 341 | 65 | 0 | 0 | 414 |
| 2022 | 10 | 451 | 91 | 0 | 0 | 552 |
| 2023 | 10 | 428 | 69 | 0 | 0 | 507 |
| 2024 | 8 | 363 | 59 | 0 | 0 | 430 |
| 2025 | 0 | 110 | 1 | 0 | 0 | 111 |
| 2026 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 239 | 10200 | 1290 | 0 | 1 | 11730 |