

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 1 | 0 | 1 | 2 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 3 | 3 |
| 1972 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1973 | 0 | 0 | 1 | 0 | 2 | 3 |
| 1974 | 0 | 2 | 0 | 0 | 1 | 3 |
| 1975 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1976 | 0 | 1 | 0 | 0 | 4 | 5 |
| 1977 | 0 | 1 | 0 | 0 | 5 | 6 |
| 1978 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1979 | 0 | 0 | 0 | 0 | 4 | 4 |
| 1980 | 0 | 0 | 1 | 0 | 3 | 4 |
| 1981 | 0 | 0 | 0 | 0 | 7 | 7 |
| 1982 | 0 | 0 | 0 | 0 | 5 | 5 |
| 1983 | 0 | 1 | 1 | 0 | 10 | 12 |
| 1984 | 0 | 1 | 1 | 0 | 9 | 11 |
| 1985 | 0 | 0 | 0 | 0 | 7 | 7 |
| 1986 | 0 | 0 | 5 | 0 | 11 | 16 |
| 1987 | 0 | 1 | 11 | 0 | 12 | 24 |
| 1988 | 0 | 2 | 4 | 0 | 17 | 23 |
| 1989 | 0 | 3 | 2 | 0 | 14 | 19 |
| 1990 | 1 | 6 | 5 | 0 | 15 | 27 |
| 1991 | 6 | 4 | 9 | 5 | 10 | 34 |
| 1992 | 4 | 9 | 18 | 1 | 16 | 48 |
| 1993 | 1 | 30 | 14 | 1 | 17 | 63 |
| 1994 | 2 | 57 | 36 | 0 | 23 | 118 |
| 1995 | 8 | 8 | 12 | 0 | 23 | 51 |
| 1996 | 1 | 21 | 34 | 1 | 20 | 77 |
| 1997 | 1 | 28 | 17 | 0 | 33 | 79 |
| 1998 | 3 | 42 | 27 | 0 | 24 | 96 |
| 1999 | 2 | 31 | 19 | 0 | 22 | 74 |
| 2000 | 2 | 27 | 34 | 1 | 35 | 99 |
| 2001 | 1 | 28 | 41 | 1 | 35 | 106 |
| 2002 | 1 | 32 | 61 | 2 | 22 | 118 |
| 2003 | 3 | 38 | 42 | 2 | 26 | 111 |
| 2004 | 1 | 58 | 32 | 0 | 32 | 123 |
| 2005 | 3 | 57 | 54 | 1 | 34 | 149 |
| 2006 | 1 | 33 | 89 | 1 | 36 | 160 |
| 2007 | 6 | 50 | 87 | 6 | 39 | 188 |
| 2008 | 1 | 54 | 127 | 9 | 36 | 227 |
| 2009 | 1 | 23 | 134 | 0 | 50 | 208 |
| 2010 | 4 | 28 | 169 | 1 | 68 | 270 |
| 2011 | 1 | 22 | 273 | 1 | 65 | 362 |
| 2012 | 7 | 145 | 276 | 0 | 110 | 538 |
| 2013 | 4 | 246 | 352 | 5 | 122 | 729 |
| 2014 | 7 | 287 | 323 | 2 | 159 | 778 |
| 2015 | 13 | 382 | 489 | 3 | 292 | 1179 |
| 2016 | 5 | 406 | 565 | 1 | 353 | 1330 |
| 2017 | 10 | 513 | 703 | 4 | 345 | 1575 |
| 2018 | 14 | 528 | 599 | 3 | 328 | 1472 |
| 2019 | 11 | 603 | 865 | 10 | 305 | 1794 |
| 2020 | 5 | 613 | 1239 | 1 | 358 | 2216 |
| 2021 | 0 | 687 | 1243 | 2 | 563 | 2495 |
| 2022 | 4 | 871 | 1493 | 2 | 468 | 2838 |
| 2023 | 15 | 1022 | 891 | 0 | 422 | 2350 |
| 2024 | 27 | 1142 | 1091 | 0 | 494 | 2754 |
| 2025 | 0 | 2 | 24 | 0 | 6 | 32 |
| Total | 176 | 8145 | 11514 | 66 | 5126 | 25027 |