Year per 1,000 people 1960 36.335 1961 39.741 1962 47.058 1963 46.884 1964 46.675 1965 46.438 1966 46.211 1967 46.058 1968 46.084 1969 46.192 1970 45.818 1971 45.418 1972 44.83 1973 44.269 1974 43.742 1975 43.04 1976 42.307 1977 41.594 1978 40.978 1979 40.444 1980 40.023 1981 39.767 1982 39.539 1983 39.366 1984 39.506 1985 39.084 1986 38.806 1987 38.539 1988 38.839 1989 39.144 1990 39.409 1991 39.51 1992 39.295 1993 39.142 1994 38.673 1995 38.02 1996 37.447 1997 37.371 1998 37.04 1999 36.701 2000 36.25 2001 35.618 2002 34.96 2003 34.574 2004 34.581 2005 34.006 2006 33.806 2007 33.565 2008 33.477 2009 33.711 2010 34.291 2011 35.09 2012 34.603 2013 33.826 2014 33.083 2015 31.593 2016 30.17 2017 28.923 2018 28.429 2019 28.078 2020 27.732 2021 27.367 2022 27.035