

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 4 | 4 | 12 | 0 | 40 | 60 |
| 1970 | 0 | 0 | 4 | 0 | 1 | 5 |
| 1971 | 0 | 3 | 0 | 0 | 1 | 4 |
| 1972 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1973 | 0 | 1 | 3 | 0 | 3 | 7 |
| 1974 | 0 | 2 | 4 | 0 | 4 | 10 |
| 1975 | 0 | 4 | 5 | 0 | 4 | 13 |
| 1976 | 0 | 3 | 5 | 0 | 9 | 17 |
| 1977 | 0 | 1 | 12 | 0 | 5 | 18 |
| 1978 | 0 | 2 | 2 | 0 | 6 | 10 |
| 1979 | 1 | 7 | 10 | 0 | 8 | 26 |
| 1980 | 0 | 5 | 8 | 0 | 11 | 24 |
| 1981 | 0 | 2 | 5 | 0 | 12 | 19 |
| 1982 | 0 | 3 | 8 | 0 | 10 | 21 |
| 1983 | 0 | 3 | 10 | 0 | 14 | 27 |
| 1984 | 0 | 3 | 5 | 0 | 10 | 18 |
| 1985 | 1 | 1 | 5 | 0 | 9 | 16 |
| 1986 | 0 | 9 | 13 | 0 | 13 | 35 |
| 1987 | 0 | 3 | 26 | 0 | 18 | 47 |
| 1988 | 1 | 6 | 23 | 0 | 16 | 46 |
| 1989 | 0 | 12 | 28 | 0 | 11 | 51 |
| 1990 | 9 | 67 | 23 | 0 | 14 | 113 |
| 1991 | 8 | 26 | 31 | 0 | 10 | 75 |
| 1992 | 1 | 19 | 22 | 0 | 9 | 51 |
| 1993 | 7 | 86 | 34 | 0 | 11 | 138 |
| 1994 | 3 | 184 | 72 | 0 | 16 | 275 |
| 1995 | 5 | 109 | 42 | 0 | 15 | 171 |
| 1996 | 9 | 135 | 59 | 0 | 15 | 218 |
| 1997 | 6 | 567 | 55 | 0 | 16 | 644 |
| 1998 | 4 | 413 | 67 | 0 | 9 | 493 |
| 1999 | 1 | 330 | 59 | 0 | 13 | 403 |
| 2000 | 1 | 529 | 46 | 0 | 17 | 593 |
| 2001 | 5 | 551 | 58 | 0 | 17 | 631 |
| 2002 | 2 | 434 | 101 | 0 | 14 | 551 |
| 2003 | 1 | 624 | 122 | 0 | 12 | 759 |
| 2004 | 6 | 727 | 110 | 0 | 16 | 859 |
| 2005 | 6 | 558 | 200 | 1 | 21 | 786 |
| 2006 | 14 | 553 | 247 | 1 | 14 | 829 |
| 2007 | 1 | 466 | 195 | 0 | 18 | 680 |
| 2008 | 11 | 281 | 323 | 1 | 11 | 627 |
| 2009 | 7 | 372 | 385 | 0 | 13 | 777 |
| 2010 | 16 | 400 | 500 | 0 | 19 | 935 |
| 2011 | 8 | 330 | 562 | 0 | 24 | 924 |
| 2012 | 18 | 917 | 546 | 0 | 44 | 1525 |
| 2013 | 4 | 1020 | 584 | 0 | 39 | 1647 |
| 2014 | 9 | 1039 | 556 | 0 | 57 | 1661 |
| 2015 | 6 | 1301 | 700 | 0 | 116 | 2123 |
| 2016 | 10 | 1447 | 918 | 0 | 124 | 2499 |
| 2017 | 13 | 1889 | 1172 | 0 | 115 | 3189 |
| 2018 | 12 | 2106 | 1213 | 1 | 132 | 3464 |
| 2019 | 20 | 2482 | 1336 | 1 | 115 | 3954 |
| 2020 | 4 | 2259 | 1851 | 1 | 125 | 4240 |
| 2021 | 4 | 2579 | 1684 | 0 | 123 | 4390 |
| 2022 | 7 | 2689 | 2177 | 0 | 150 | 5023 |
| 2023 | 37 | 3365 | 1175 | 0 | 90 | 4667 |
| 2024 | 28 | 3508 | 1551 | 0 | 110 | 5197 |
| 2025 | 0 | 28 | 55 | 0 | 0 | 83 |
| Total | 310 | 34464 | 19020 | 6 | 1873 | 55673 |