

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 12 | 0 | 109 | 122 |
| 1970 | 0 | 0 | 3 | 0 | 4 | 7 |
| 1971 | 0 | 0 | 2 | 0 | 7 | 9 |
| 1972 | 0 | 0 | 1 | 0 | 7 | 8 |
| 1973 | 0 | 0 | 2 | 0 | 8 | 10 |
| 1974 | 0 | 2 | 7 | 0 | 4 | 13 |
| 1975 | 0 | 0 | 4 | 0 | 7 | 11 |
| 1976 | 0 | 3 | 2 | 0 | 9 | 14 |
| 1977 | 0 | 0 | 5 | 0 | 12 | 17 |
| 1978 | 0 | 0 | 2 | 0 | 9 | 11 |
| 1979 | 0 | 1 | 7 | 0 | 15 | 23 |
| 1980 | 0 | 0 | 3 | 0 | 16 | 19 |
| 1981 | 0 | 0 | 1 | 0 | 16 | 17 |
| 1982 | 0 | 1 | 8 | 0 | 18 | 27 |
| 1983 | 0 | 0 | 5 | 0 | 12 | 17 |
| 1984 | 0 | 2 | 6 | 0 | 17 | 25 |
| 1985 | 0 | 3 | 6 | 0 | 16 | 25 |
| 1986 | 0 | 5 | 11 | 0 | 21 | 37 |
| 1987 | 0 | 2 | 26 | 0 | 17 | 45 |
| 1988 | 0 | 1 | 26 | 0 | 19 | 46 |
| 1989 | 0 | 6 | 33 | 0 | 23 | 62 |
| 1990 | 2 | 15 | 5 | 1 | 17 | 40 |
| 1991 | 6 | 12 | 22 | 1 | 15 | 56 |
| 1992 | 3 | 86 | 22 | 1 | 14 | 126 |
| 1993 | 2 | 355 | 24 | 1 | 21 | 403 |
| 1994 | 5 | 1269 | 34 | 0 | 19 | 1327 |
| 1995 | 4 | 1594 | 23 | 4 | 18 | 1643 |
| 1996 | 2 | 1238 | 19 | 1 | 14 | 1274 |
| 1997 | 2 | 410 | 22 | 1 | 22 | 457 |
| 1998 | 2 | 674 | 19 | 1 | 25 | 721 |
| 1999 | 1 | 89 | 13 | 1 | 17 | 121 |
| 2000 | 2 | 978 | 31 | 1 | 28 | 1040 |
| 2001 | 4 | 664 | 33 | 1 | 32 | 734 |
| 2002 | 0 | 1038 | 58 | 1 | 21 | 1118 |
| 2003 | 2 | 804 | 45 | 1 | 20 | 872 |
| 2004 | 2 | 1052 | 49 | 0 | 24 | 1127 |
| 2005 | 2 | 174 | 69 | 2 | 30 | 277 |
| 2006 | 1 | 707 | 86 | 2 | 27 | 823 |
| 2007 | 0 | 725 | 110 | 0 | 33 | 868 |
| 2008 | 2 | 328 | 116 | 9 | 36 | 491 |
| 2009 | 3 | 86 | 147 | 0 | 46 | 282 |
| 2010 | 1 | 351 | 235 | 0 | 57 | 644 |
| 2011 | 6 | 317 | 295 | 0 | 70 | 688 |
| 2012 | 8 | 602 | 293 | 1 | 93 | 997 |
| 2013 | 10 | 742 | 576 | 1 | 103 | 1432 |
| 2014 | 9 | 779 | 425 | 0 | 129 | 1342 |
| 2015 | 9 | 741 | 639 | 1 | 247 | 1637 |
| 2016 | 16 | 806 | 701 | 1 | 247 | 1771 |
| 2017 | 14 | 964 | 854 | 1 | 235 | 2068 |
| 2018 | 14 | 1046 | 827 | 2 | 280 | 2169 |
| 2019 | 14 | 853 | 1030 | 6 | 269 | 2172 |
| 2020 | 15 | 1050 | 1560 | 0 | 367 | 2992 |
| 2021 | 10 | 1096 | 1436 | 3 | 495 | 3040 |
| 2022 | 10 | 1000 | 1690 | 1 | 372 | 3073 |
| 2023 | 27 | 1539 | 1318 | 0 | 452 | 3336 |
| 2024 | 24 | 1607 | 1562 | 0 | 504 | 3697 |
| 2025 | 0 | 1 | 11 | 0 | 3 | 15 |
| Total | 234 | 25819 | 14571 | 46 | 4768 | 45438 |