

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 4 | 14 | 0 | 121 | 139 |
| 1970 | 0 | 0 | 1 | 0 | 3 | 4 |
| 1971 | 0 | 4 | 1 | 0 | 9 | 14 |
| 1972 | 0 | 0 | 0 | 0 | 6 | 6 |
| 1973 | 0 | 3 | 2 | 0 | 7 | 12 |
| 1974 | 0 | 0 | 2 | 0 | 7 | 9 |
| 1975 | 0 | 1 | 3 | 0 | 7 | 11 |
| 1976 | 0 | 3 | 4 | 0 | 10 | 17 |
| 1977 | 0 | 0 | 7 | 0 | 9 | 16 |
| 1978 | 0 | 1 | 1 | 0 | 10 | 12 |
| 1979 | 0 | 3 | 5 | 0 | 12 | 20 |
| 1980 | 0 | 2 | 2 | 0 | 12 | 16 |
| 1981 | 0 | 1 | 3 | 0 | 16 | 20 |
| 1982 | 0 | 3 | 6 | 0 | 16 | 25 |
| 1983 | 0 | 2 | 4 | 0 | 13 | 19 |
| 1984 | 0 | 2 | 1 | 0 | 14 | 17 |
| 1985 | 0 | 2 | 5 | 0 | 12 | 19 |
| 1986 | 0 | 0 | 11 | 0 | 15 | 26 |
| 1987 | 0 | 4 | 19 | 0 | 21 | 44 |
| 1988 | 0 | 5 | 13 | 0 | 19 | 37 |
| 1989 | 0 | 9 | 11 | 0 | 17 | 37 |
| 1990 | 2 | 40 | 12 | 0 | 14 | 68 |
| 1991 | 6 | 23 | 19 | 0 | 14 | 62 |
| 1992 | 2 | 43 | 19 | 0 | 11 | 75 |
| 1993 | 2 | 103 | 20 | 0 | 15 | 140 |
| 1994 | 5 | 297 | 45 | 0 | 23 | 370 |
| 1995 | 2 | 217 | 32 | 2 | 19 | 272 |
| 1996 | 4 | 352 | 25 | 0 | 16 | 397 |
| 1997 | 4 | 252 | 34 | 0 | 28 | 318 |
| 1998 | 0 | 418 | 35 | 0 | 24 | 477 |
| 1999 | 0 | 224 | 25 | 0 | 19 | 268 |
| 2000 | 4 | 456 | 48 | 0 | 30 | 538 |
| 2001 | 1 | 589 | 36 | 0 | 30 | 656 |
| 2002 | 0 | 483 | 71 | 0 | 17 | 571 |
| 2003 | 1 | 868 | 67 | 1 | 22 | 959 |
| 2004 | 0 | 661 | 41 | 0 | 24 | 726 |
| 2005 | 0 | 463 | 78 | 1 | 28 | 570 |
| 2006 | 2 | 384 | 114 | 0 | 23 | 523 |
| 2007 | 0 | 363 | 134 | 3 | 24 | 524 |
| 2008 | 0 | 307 | 149 | 7 | 22 | 485 |
| 2009 | 0 | 122 | 189 | 0 | 26 | 337 |
| 2010 | 5 | 152 | 285 | 0 | 29 | 471 |
| 2011 | 1 | 98 | 307 | 0 | 40 | 446 |
| 2012 | 5 | 395 | 331 | 0 | 82 | 813 |
| 2013 | 2 | 566 | 408 | 4 | 65 | 1045 |
| 2014 | 5 | 516 | 428 | 2 | 94 | 1045 |
| 2015 | 4 | 739 | 531 | 1 | 135 | 1410 |
| 2016 | 7 | 785 | 661 | 1 | 176 | 1630 |
| 2017 | 17 | 869 | 652 | 0 | 170 | 1708 |
| 2018 | 10 | 909 | 833 | 2 | 168 | 1922 |
| 2019 | 14 | 1170 | 925 | 3 | 163 | 2275 |
| 2020 | 3 | 1133 | 1368 | 0 | 188 | 2692 |
| 2021 | 0 | 1209 | 1238 | 0 | 251 | 2698 |
| 2022 | 6 | 1429 | 1455 | 3 | 229 | 3122 |
| 2023 | 19 | 1689 | 829 | 0 | 210 | 2747 |
| 2024 | 34 | 1893 | 1026 | 0 | 240 | 3193 |
| 2025 | 0 | 4 | 20 | 0 | 2 | 26 |
| Total | 167 | 20270 | 12605 | 30 | 3027 | 36099 |