

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 1 | 7 | 26 | 0 | 0 | 34 |
| 1970 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1971 | 0 | 9 | 1 | 0 | 0 | 10 |
| 1972 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1973 | 0 | 3 | 6 | 0 | 0 | 9 |
| 1974 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1975 | 0 | 5 | 4 | 0 | 0 | 9 |
| 1976 | 0 | 2 | 6 | 0 | 0 | 8 |
| 1977 | 0 | 1 | 10 | 0 | 0 | 11 |
| 1978 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1979 | 1 | 4 | 9 | 0 | 0 | 14 |
| 1980 | 2 | 0 | 8 | 0 | 0 | 10 |
| 1981 | 0 | 1 | 6 | 0 | 0 | 7 |
| 1982 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1983 | 0 | 2 | 7 | 0 | 0 | 9 |
| 1984 | 0 | 1 | 4 | 0 | 0 | 5 |
| 1985 | 1 | 2 | 1 | 0 | 0 | 4 |
| 1986 | 0 | 3 | 13 | 0 | 0 | 16 |
| 1987 | 0 | 3 | 14 | 0 | 0 | 17 |
| 1988 | 2 | 5 | 8 | 0 | 0 | 15 |
| 1989 | 1 | 16 | 19 | 0 | 0 | 36 |
| 1990 | 4 | 38 | 20 | 0 | 0 | 62 |
| 1991 | 3 | 22 | 17 | 0 | 0 | 42 |
| 1992 | 3 | 7 | 33 | 0 | 0 | 43 |
| 1993 | 1 | 63 | 31 | 0 | 0 | 95 |
| 1994 | 1 | 108 | 43 | 0 | 0 | 152 |
| 1995 | 8 | 72 | 31 | 0 | 0 | 111 |
| 1996 | 2 | 70 | 30 | 0 | 0 | 102 |
| 1997 | 4 | 267 | 34 | 0 | 0 | 305 |
| 1998 | 5 | 231 | 36 | 0 | 0 | 272 |
| 1999 | 1 | 183 | 37 | 0 | 0 | 221 |
| 2000 | 4 | 206 | 40 | 0 | 0 | 250 |
| 2001 | 5 | 285 | 52 | 0 | 0 | 342 |
| 2002 | 2 | 255 | 80 | 0 | 0 | 337 |
| 2003 | 2 | 353 | 84 | 0 | 0 | 439 |
| 2004 | 2 | 539 | 77 | 0 | 0 | 618 |
| 2005 | 3 | 315 | 152 | 0 | 0 | 470 |
| 2006 | 5 | 298 | 171 | 0 | 0 | 474 |
| 2007 | 3 | 260 | 189 | 0 | 0 | 452 |
| 2008 | 1 | 224 | 198 | 0 | 0 | 423 |
| 2009 | 6 | 225 | 211 | 0 | 0 | 442 |
| 2010 | 5 | 313 | 371 | 0 | 0 | 689 |
| 2011 | 0 | 175 | 305 | 0 | 0 | 480 |
| 2012 | 14 | 522 | 285 | 0 | 0 | 821 |
| 2013 | 14 | 422 | 295 | 0 | 0 | 731 |
| 2014 | 13 | 564 | 313 | 0 | 0 | 890 |
| 2015 | 8 | 669 | 396 | 0 | 0 | 1073 |
| 2016 | 16 | 703 | 433 | 0 | 0 | 1152 |
| 2017 | 16 | 858 | 517 | 0 | 0 | 1391 |
| 2018 | 13 | 1010 | 592 | 0 | 0 | 1615 |
| 2019 | 24 | 1066 | 569 | 0 | 0 | 1659 |
| 2020 | 6 | 1126 | 903 | 0 | 0 | 2035 |
| 2021 | 13 | 1234 | 883 | 0 | 0 | 2130 |
| 2022 | 14 | 1471 | 1106 | 0 | 0 | 2591 |
| 2023 | 27 | 1840 | 657 | 0 | 0 | 2524 |
| 2024 | 33 | 1904 | 752 | 0 | 0 | 2689 |
| 2025 | 2 | 1 | 24 | 0 | 0 | 27 |
| Total | 291 | 17967 | 10124 | 0 | 0 | 28382 |