

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 0 | 9 | 0 | 2 | 13 |
| 1970 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1971 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1972 | 0 | 0 | 0 | 0 | 1 | 1 |
| 1973 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1974 | 0 | 6 | 2 | 0 | 0 | 8 |
| 1975 | 0 | 2 | 3 | 0 | 2 | 7 |
| 1976 | 0 | 0 | 2 | 0 | 1 | 3 |
| 1977 | 0 | 3 | 13 | 0 | 1 | 17 |
| 1978 | 0 | 3 | 8 | 0 | 0 | 11 |
| 1979 | 2 | 2 | 12 | 0 | 0 | 16 |
| 1980 | 0 | 0 | 6 | 0 | 1 | 7 |
| 1981 | 0 | 1 | 5 | 0 | 1 | 7 |
| 1982 | 0 | 0 | 13 | 0 | 2 | 15 |
| 1983 | 1 | 0 | 8 | 0 | 1 | 10 |
| 1984 | 0 | 0 | 3 | 0 | 2 | 5 |
| 1985 | 1 | 3 | 6 | 0 | 0 | 10 |
| 1986 | 1 | 5 | 15 | 0 | 0 | 21 |
| 1987 | 1 | 6 | 12 | 0 | 2 | 21 |
| 1988 | 2 | 3 | 15 | 0 | 1 | 21 |
| 1989 | 6 | 10 | 12 | 0 | 1 | 29 |
| 1990 | 2 | 11 | 29 | 0 | 2 | 44 |
| 1991 | 7 | 15 | 39 | 0 | 0 | 61 |
| 1992 | 0 | 7 | 35 | 0 | 1 | 43 |
| 1993 | 13 | 11 | 58 | 0 | 1 | 83 |
| 1994 | 12 | 21 | 48 | 0 | 0 | 81 |
| 1995 | 9 | 7 | 49 | 0 | 3 | 68 |
| 1996 | 9 | 23 | 42 | 0 | 2 | 76 |
| 1997 | 4 | 23 | 61 | 0 | 3 | 91 |
| 1998 | 3 | 16 | 54 | 0 | 3 | 76 |
| 1999 | 2 | 11 | 50 | 0 | 5 | 68 |
| 2000 | 2 | 8 | 44 | 0 | 2 | 56 |
| 2001 | 2 | 6 | 59 | 0 | 3 | 70 |
| 2002 | 1 | 3 | 81 | 0 | 2 | 87 |
| 2003 | 10 | 5 | 98 | 0 | 3 | 116 |
| 2004 | 9 | 20 | 89 | 0 | 2 | 120 |
| 2005 | 8 | 6 | 137 | 0 | 3 | 154 |
| 2006 | 2 | 7 | 120 | 0 | 0 | 129 |
| 2007 | 1 | 5 | 113 | 1 | 4 | 124 |
| 2008 | 0 | 2 | 134 | 0 | 1 | 137 |
| 2009 | 4 | 3 | 214 | 0 | 0 | 221 |
| 2010 | 2 | 4 | 264 | 0 | 4 | 274 |
| 2011 | 10 | 9 | 370 | 0 | 5 | 394 |
| 2012 | 3 | 6 | 464 | 0 | 12 | 485 |
| 2013 | 1 | 9 | 501 | 0 | 8 | 519 |
| 2014 | 6 | 7 | 427 | 0 | 16 | 456 |
| 2015 | 7 | 5 | 509 | 0 | 7 | 528 |
| 2016 | 7 | 6 | 610 | 0 | 14 | 637 |
| 2017 | 17 | 6 | 896 | 0 | 8 | 927 |
| 2018 | 10 | 10 | 1110 | 0 | 11 | 1141 |
| 2019 | 18 | 9 | 1065 | 0 | 5 | 1097 |
| 2020 | 8 | 7 | 1092 | 0 | 13 | 1120 |
| 2021 | 3 | 6 | 978 | 0 | 9 | 996 |
| 2022 | 4 | 4 | 1165 | 0 | 10 | 1183 |
| 2023 | 18 | 19 | 1027 | 0 | 8 | 1072 |
| 2024 | 18 | 19 | 1054 | 0 | 24 | 1115 |
| 2025 | 0 | 0 | 13 | 0 | 0 | 13 |
| Total | 248 | 380 | 13248 | 1 | 213 | 14090 |