Year per 1,000 people 1960 11.09 1961 10.507 1962 10.096 1963 9.814 1964 9.573 1965 9.206 1966 8.884 1967 8.594 1968 8.392 1969 8.216 1970 7.587 1971 7.269 1972 7.321 1973 7.28 1974 7.25 1975 7.181 1976 7.116 1977 7.158 1978 6.79 1979 6.636 1980 6.468 1981 6.299 1982 6.142 1983 6.025 1984 5.863 1985 5.827 1986 5.738 1987 5.825 1988 5.882 1989 6.649 1990 5.923 1991 6.086 1992 5.88 1993 5.786 1994 5.981 1995 6.343 1996 6.469 1997 6.651 1998 6.799 1999 6.657 2000 8.101 2001 7.958 2002 7.86 2003 7.765 2004 9.451 2005 7.489 2006 7.576 2007 7.631 2008 7.77 2009 8.987 2010 7.369 2011 7.371 2012 7.181 2013 7.092 2014 6.979 2015 6.98 2016 6.896 2017 7.029 2018 7.037 2019 7.072 2020 7.056 2021 7.36 2022 7.287