Year per 1,000 people 1960 12.051 1961 11.659 1962 11.277 1963 11.494 1964 11.641 1965 11.68 1966 11.283 1967 10.898 1968 10.578 1969 10.287 1970 10.019 1971 9.893 1972 9.709 1973 9.587 1974 9.519 1975 9.436 1976 9.385 1977 9.359 1978 9.342 1979 9.375 1980 9.46 1981 9.23 1982 8.991 1983 8.814 1984 8.578 1985 8.403 1986 8.361 1987 8.19 1988 8.014 1989 7.708 1990 7.567 1991 7.432 1992 7.314 1993 7.145 1994 7.004 1995 6.975 1996 6.942 1997 7.077 1998 7.306 1999 7.594 2000 7.801 2001 8.084 2002 8.351 2003 8.64 2004 8.494 2005 8.209 2006 7.954 2007 7.69 2008 7.452 2009 7.197 2010 7.109 2011 7.217 2012 7.418 2013 7.582 2014 7.646 2015 7.215 2016 6.941 2017 6.672 2018 6.753 2019 7.06 2020 7.036 2021 8.667 2022 8.637