Year per 1,000 people 1960 12.763 1961 12.538 1962 12.281 1963 11.885 1964 11.561 1965 11.203 1966 10.94 1967 10.749 1968 10.6 1969 10.445 1970 10.332 1971 10.252 1972 10.127 1973 10.026 1974 9.939 1975 9.844 1976 10.022 1977 9.957 1978 9.888 1979 7.7 1980 8 1981 8 1982 7.9 1983 8 1984 8.3 1985 8 1986 7.4 1987 7.6 1988 7.7 1989 7.6 1990 7.87 1991 8.19 1992 8.37 1993 9.53 1994 9.93 1995 10.66 1996 10.66 1997 10.44 1998 10.24 1999 9.87 2000 10.06 2001 9.95 2002 10.05 2003 10.41 2004 10.14 2005 10.37 2006 10.27 2007 10.22 2008 9.74 2009 8.88 2010 8.95 2011 8.72 2012 8.54 2013 8 2014 7.65 2015 7.46 2016 7.37 2017 7.15 2018 7.14 2019 7.19 2020 8.6 2021 9.61 2022 6.8