Year per 1,000 people 1960 14.221 1961 13.919 1962 13.585 1963 13.235 1964 12.899 1965 12.566 1966 12.259 1967 12.02 1968 11.813 1969 11.629 1970 11.441 1971 11.373 1972 11.302 1973 11.339 1974 11.308 1975 11.3 1976 11.561 1977 11.821 1978 12.592 1979 12.561 1980 11.069 1981 10.122 1982 9.776 1983 9.442 1984 8.91 1985 8.492 1986 8.17 1987 8.117 1988 8.17 1989 8.424 1990 8.747 1991 9.259 1992 9.947 1993 10.829 1994 11.755 1995 12.825 1996 13.755 1997 14.357 1998 15.15 1999 16.301 2000 16.801 2001 19.048 2002 16.953 2003 17.805 2004 16.989 2005 16.82 2006 16.436 2007 16.27 2008 15.604 2009 14.804 2010 13.281 2011 11.857 2012 10.691 2013 9.787 2014 9.123 2015 8.774 2016 8.441 2017 8.266 2018 7.972 2019 8.043 2020 8.132 2021 9.057 2022 8.943