Year per 1,000 people 1960 24.944 1961 24.863 1962 24.866 1963 24.787 1964 24.722 1965 24.702 1966 24.544 1967 24.39 1968 24.179 1969 23.971 1970 23.627 1971 23.266 1972 22.793 1973 22.112 1974 21.545 1975 20.821 1976 20.042 1977 19.241 1978 18.454 1979 17.696 1980 16.998 1981 16.466 1982 15.939 1983 15.484 1984 14.861 1985 14.298 1986 13.487 1987 12.857 1988 12.208 1989 11.756 1990 11.433 1991 11.285 1992 11.258 1993 11.291 1994 11.287 1995 11.326 1996 11.395 1997 11.417 1998 11.488 1999 11.39 2000 11.181 2001 10.815 2002 10.423 2003 9.932 2004 9.444 2005 8.99 2006 8.577 2007 8.178 2008 7.831 2009 7.514 2010 7.19 2011 6.894 2012 6.78 2013 6.503 2014 6.318 2015 6.109 2016 5.84 2017 5.721 2018 5.579 2019 5.409 2020 5.584 2021 5.922 2022 5.548