*Excludes Observations that spanned multiple years
Pre 1970 | 11 |
---|---|
1970 | 1 |
1971 | 3 |
1972 | 0 |
1973 | 0 |
1974 | 0 |
1975 | 1 |
1976 | 0 |
1977 | 1 |
1978 | 0 |
1979 | 0 |
1980 | 0 |
1981 | 0 |
1982 | 0 |
1983 | 0 |
1984 | 0 |
1985 | 14 |
1986 | 8 |
1987 | 43 |
1988 | 98 |
1989 | 19 |
1990 | 27 |
1991 | 42 |
1992 | 39 |
1993 | 53 |
1994 | 23 |
1995 | 62 |
1996 | 31 |
1997 | 20 |
1998 | 10 |
1999 | 52 |
2000 | 44 |
2001 | 12 |
2002 | 13 |
2003 | 2 |
2004 | 12 |
2005 | 6 |
2006 | 12 |
2007 | 15 |
2008 | 13 |
2009 | 18 |
2010 | 11 |
2011 | 16 |
2012 | 8 |
2013 | 14 |
2014 | 9 |
2015 | 10 |
2016 | 24 |
2017 | 30 |
2018 | 43 |
2019 | 19 |
2020 | 122 |
2021 | 134 |
2022 | 150 |
2023 | 57 |
Total | 1352 |