Year per 1,000 people 1960 46.948 1961 46.667 1962 46.325 1963 46.52 1964 46.386 1965 46.377 1966 46.17 1967 46.49 1968 46.495 1969 46.094 1970 44.863 1971 43.662 1972 42.531 1973 41.638 1974 40.784 1975 40.223 1976 39.643 1977 38.754 1978 37.733 1979 36.653 1980 35.66 1981 34.464 1982 34.203 1983 33.602 1984 32.617 1985 30.717 1986 29.049 1987 26.827 1988 25.128 1989 23.57 1990 22.158 1991 20.905 1992 20.167 1993 19.856 1994 22.02 1995 24.013 1996 24.202 1997 23.297 1998 22.502 1999 21.884 2000 21.617 2001 21.649 2002 21.712 2003 21.943 2004 22.109 2005 22.085 2006 22.056 2007 21.929 2008 21.7 2009 21.494 2010 21.203 2011 20.949 2012 20.036 2013 19.119 2014 18.234 2015 16.892 2016 14.8 2017 14.386 2018 13.443 2019 12.437 2020 11.797 2021 10.41 2022 9.727