

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 7 | 3 | 23 | 0 | 72 | 105 |
| 1970 | 0 | 0 | 3 | 0 | 3 | 6 |
| 1971 | 0 | 2 | 0 | 0 | 7 | 9 |
| 1972 | 0 | 0 | 1 | 0 | 6 | 7 |
| 1973 | 0 | 1 | 5 | 0 | 5 | 11 |
| 1974 | 0 | 1 | 3 | 0 | 4 | 8 |
| 1975 | 4 | 30 | 6 | 0 | 6 | 46 |
| 1976 | 0 | 1 | 3 | 0 | 10 | 14 |
| 1977 | 0 | 1 | 10 | 0 | 12 | 23 |
| 1978 | 1 | 1 | 4 | 0 | 9 | 15 |
| 1979 | 1 | 4 | 9 | 0 | 9 | 23 |
| 1980 | 3 | 15 | 12 | 0 | 8 | 38 |
| 1981 | 0 | 1 | 3 | 0 | 13 | 17 |
| 1982 | 0 | 2 | 5 | 0 | 15 | 22 |
| 1983 | 0 | 2 | 10 | 0 | 15 | 27 |
| 1984 | 0 | 1 | 6 | 0 | 13 | 20 |
| 1985 | 0 | 1 | 7 | 0 | 14 | 22 |
| 1986 | 0 | 3 | 6 | 0 | 14 | 23 |
| 1987 | 0 | 1 | 8 | 0 | 10 | 19 |
| 1988 | 1 | 10 | 13 | 0 | 13 | 37 |
| 1989 | 0 | 9 | 18 | 0 | 17 | 44 |
| 1990 | 0 | 48 | 18 | 1 | 19 | 86 |
| 1991 | 0 | 21 | 25 | 1 | 12 | 59 |
| 1992 | 0 | 4 | 25 | 0 | 12 | 41 |
| 1993 | 1 | 32 | 33 | 0 | 16 | 82 |
| 1994 | 3 | 120 | 44 | 0 | 17 | 184 |
| 1995 | 6 | 412 | 31 | 0 | 12 | 461 |
| 1996 | 12 | 101 | 33 | 0 | 13 | 159 |
| 1997 | 5 | 919 | 25 | 0 | 18 | 967 |
| 1998 | 8 | 617 | 35 | 0 | 12 | 672 |
| 1999 | 1 | 419 | 39 | 0 | 10 | 469 |
| 2000 | 3 | 642 | 35 | 1 | 22 | 703 |
| 2001 | 1 | 815 | 28 | 0 | 17 | 861 |
| 2002 | 1 | 921 | 76 | 0 | 10 | 1008 |
| 2003 | 1 | 1197 | 48 | 0 | 11 | 1257 |
| 2004 | 8 | 1347 | 51 | 0 | 18 | 1424 |
| 2005 | 5 | 854 | 116 | 0 | 18 | 993 |
| 2006 | 4 | 997 | 133 | 0 | 13 | 1147 |
| 2007 | 6 | 1088 | 101 | 0 | 21 | 1216 |
| 2008 | 2 | 672 | 155 | 7 | 16 | 852 |
| 2009 | 5 | 564 | 193 | 0 | 27 | 789 |
| 2010 | 10 | 1304 | 165 | 0 | 25 | 1504 |
| 2011 | 7 | 965 | 271 | 1 | 37 | 1281 |
| 2012 | 6 | 1374 | 207 | 0 | 38 | 1625 |
| 2013 | 3 | 722 | 254 | 0 | 34 | 1013 |
| 2014 | 5 | 750 | 267 | 0 | 63 | 1085 |
| 2015 | 7 | 777 | 414 | 0 | 134 | 1332 |
| 2016 | 4 | 772 | 489 | 1 | 216 | 1482 |
| 2017 | 19 | 992 | 583 | 0 | 228 | 1822 |
| 2018 | 3 | 873 | 637 | 1 | 164 | 1678 |
| 2019 | 7 | 857 | 641 | 3 | 130 | 1638 |
| 2020 | 7 | 796 | 710 | 0 | 68 | 1581 |
| 2021 | 6 | 1096 | 615 | 0 | 112 | 1829 |
| 2022 | 9 | 1210 | 826 | 0 | 141 | 2186 |
| 2023 | 18 | 1334 | 504 | 0 | 67 | 1923 |
| 2024 | 18 | 1276 | 676 | 0 | 129 | 2099 |
| 2025 | 0 | 10 | 23 | 0 | 7 | 40 |
| Total | 218 | 26987 | 8681 | 16 | 2182 | 38084 |