*Excludes Observations that spanned multiple years
Pre 1970 | 2 |
---|---|
1970 | 2 |
1971 | 3 |
1972 | 0 |
1973 | 0 |
1974 | 0 |
1975 | 0 |
1976 | 14 |
1977 | 19 |
1978 | 1 |
1979 | 2 |
1980 | 3 |
1981 | 25 |
1982 | 0 |
1983 | 2 |
1984 | 1 |
1985 | 4 |
1986 | 43 |
1987 | 3 |
1988 | 63 |
1989 | 17 |
1990 | 4 |
1991 | 116 |
1992 | 124 |
1993 | 147 |
1994 | 57 |
1995 | 112 |
1996 | 72 |
1997 | 103 |
1998 | 20 |
1999 | 9 |
2000 | 13 |
2001 | 126 |
2002 | 46 |
2003 | 70 |
2004 | 45 |
2005 | 27 |
2006 | 58 |
2007 | 4 |
2008 | 17 |
2009 | 21 |
2010 | 106 |
2011 | 94 |
2012 | 19 |
2013 | 89 |
2014 | 131 |
2015 | 147 |
2016 | 231 |
2017 | 299 |
2018 | 288 |
2019 | 416 |
2020 | 336 |
2021 | 356 |
2022 | 370 |
2023 | 16 |
2024 | 20 |
Total | 4313 |