

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 4 | 15 | 0 | 31 | 50 |
| 1970 | 0 | 0 | 6 | 0 | 2 | 8 |
| 1971 | 0 | 0 | 2 | 0 | 7 | 9 |
| 1972 | 0 | 0 | 1 | 0 | 6 | 7 |
| 1973 | 0 | 1 | 3 | 0 | 2 | 6 |
| 1974 | 1 | 1 | 6 | 0 | 2 | 10 |
| 1975 | 0 | 2 | 4 | 0 | 6 | 12 |
| 1976 | 0 | 3 | 5 | 0 | 4 | 12 |
| 1977 | 0 | 0 | 6 | 0 | 7 | 13 |
| 1978 | 0 | 1 | 2 | 0 | 5 | 8 |
| 1979 | 0 | 2 | 4 | 0 | 8 | 14 |
| 1980 | 0 | 0 | 3 | 0 | 8 | 11 |
| 1981 | 0 | 1 | 4 | 0 | 8 | 13 |
| 1982 | 0 | 1 | 8 | 0 | 9 | 18 |
| 1983 | 0 | 0 | 4 | 0 | 10 | 14 |
| 1984 | 0 | 4 | 8 | 0 | 8 | 20 |
| 1985 | 0 | 4 | 7 | 0 | 14 | 25 |
| 1986 | 2 | 3 | 15 | 0 | 11 | 31 |
| 1987 | 0 | 2 | 26 | 0 | 9 | 37 |
| 1988 | 0 | 4 | 30 | 0 | 14 | 48 |
| 1989 | 0 | 5 | 34 | 0 | 15 | 54 |
| 1990 | 0 | 31 | 11 | 1 | 13 | 56 |
| 1991 | 2 | 18 | 22 | 0 | 9 | 51 |
| 1992 | 4 | 87 | 24 | 1 | 13 | 129 |
| 1993 | 3 | 533 | 86 | 0 | 19 | 641 |
| 1994 | 0 | 1896 | 188 | 1 | 18 | 2103 |
| 1995 | 3 | 1872 | 167 | 2 | 18 | 2062 |
| 1996 | 2 | 2701 | 108 | 1 | 13 | 2825 |
| 1997 | 0 | 552 | 76 | 1 | 18 | 647 |
| 1998 | 3 | 1205 | 31 | 1 | 17 | 1257 |
| 1999 | 0 | 208 | 23 | 1 | 12 | 244 |
| 2000 | 1 | 1788 | 90 | 1 | 24 | 1904 |
| 2001 | 0 | 867 | 54 | 1 | 32 | 954 |
| 2002 | 0 | 991 | 58 | 1 | 14 | 1064 |
| 2003 | 2 | 536 | 58 | 0 | 10 | 606 |
| 2004 | 1 | 1118 | 43 | 0 | 21 | 1183 |
| 2005 | 0 | 230 | 68 | 0 | 17 | 315 |
| 2006 | 0 | 291 | 67 | 1 | 19 | 378 |
| 2007 | 5 | 991 | 112 | 0 | 21 | 1129 |
| 2008 | 1 | 736 | 155 | 0 | 19 | 911 |
| 2009 | 1 | 162 | 161 | 0 | 22 | 346 |
| 2010 | 3 | 478 | 352 | 0 | 26 | 859 |
| 2011 | 2 | 370 | 269 | 0 | 28 | 669 |
| 2012 | 2 | 771 | 344 | 1 | 55 | 1173 |
| 2013 | 4 | 817 | 339 | 0 | 18 | 1178 |
| 2014 | 1 | 372 | 399 | 0 | 27 | 799 |
| 2015 | 2 | 1202 | 556 | 2 | 80 | 1842 |
| 2016 | 2 | 1181 | 624 | 0 | 49 | 1856 |
| 2017 | 6 | 1594 | 1019 | 0 | 157 | 2776 |
| 2018 | 3 | 1316 | 736 | 1 | 41 | 2097 |
| 2019 | 7 | 1297 | 939 | 1 | 68 | 2312 |
| 2020 | 3 | 1913 | 1710 | 0 | 64 | 3690 |
| 2021 | 4 | 1936 | 1234 | 0 | 147 | 3321 |
| 2022 | 1 | 1443 | 2032 | 1 | 147 | 3624 |
| 2023 | 1 | 1412 | 995 | 0 | 89 | 2497 |
| 2024 | 13 | 2874 | 1072 | 0 | 80 | 4039 |
| 2025 | 0 | 0 | 15 | 0 | 0 | 15 |
| Total | 85 | 35827 | 14430 | 19 | 1611 | 51972 |