Year per 1,000 people 1960 48.67 1961 48.374 1962 48.155 1963 48.034 1964 48.018 1965 48.126 1966 48.35 1967 48.578 1968 48.884 1969 48.822 1970 48.965 1971 49.054 1972 48.982 1973 48.774 1974 48.704 1975 48.884 1976 48.879 1977 48.758 1978 48.703 1979 48.842 1980 48.792 1981 48.849 1982 48.708 1983 48.844 1984 49.199 1985 49.923 1986 50.562 1987 51.09 1988 51.225 1989 51.313 1990 51.372 1991 51.174 1992 51.281 1993 51.152 1994 50.898 1995 50.856 1996 50.206 1997 49.91 1998 49.335 1999 49.081 2000 48.593 2001 48.251 2002 47.774 2003 47.115 2004 46.68 2005 45.989 2006 45.363 2007 44.688 2008 43.934 2009 43.544 2010 43.068 2011 42.434 2012 41.743 2013 40.943 2014 40.154 2015 39.422 2016 38.709 2017 38.343 2018 38.062 2019 37.667 2020 37.252 2021 36.795 2022 36.215