Year per 1,000 people 1960 45.749 1961 45.76 1962 45.647 1963 45.503 1964 45.298 1965 45.091 1966 44.831 1967 44.579 1968 44.201 1969 43.724 1970 43.549 1971 43.445 1972 43.342 1973 43.281 1974 43.115 1975 43.017 1976 42.941 1977 43.027 1978 43.117 1979 43.235 1980 43.539 1981 44.156 1982 44.567 1983 44.669 1984 44.469 1985 44.245 1986 44.29 1987 44.207 1988 44.011 1989 43.684 1990 43.147 1991 42.531 1992 41.829 1993 40.756 1994 40.097 1995 39.211 1996 38.516 1997 37.683 1998 37.079 1999 36.475 2000 35.761 2001 35.342 2002 34.868 2003 34.132 2004 33.513 2005 32.867 2006 32.402 2007 32.589 2008 32.361 2009 32.193 2010 32.109 2011 31.872 2012 31.601 2013 31.181 2014 30.462 2015 29.699 2016 29.306 2017 28.963 2018 28.594 2019 28.276 2020 27.967 2021 27.519 2022 27.233