Year per 1,000 people 1960 49.804 1961 49.347 1962 49.166 1963 48.989 1964 48.361 1965 47.878 1966 47.351 1967 47.233 1968 47.199 1969 47.338 1970 47.179 1971 46.939 1972 46.526 1973 46.222 1974 45.844 1975 45.408 1976 44.962 1977 44.704 1978 44.671 1979 44.674 1980 44.838 1981 44.955 1982 44.766 1983 44.842 1984 44.922 1985 44.329 1986 43.752 1987 43.033 1988 42.043 1989 41.088 1990 40.372 1991 39.613 1992 38.744 1993 37.909 1994 36.763 1995 36.171 1996 35.415 1997 35.258 1998 35.267 1999 35.418 2000 35.865 2001 35.635 2002 35.344 2003 34.939 2004 34.535 2005 34.885 2006 34.124 2007 33.561 2008 33.206 2009 32.982 2010 33.004 2011 32.957 2012 32.885 2013 32.535 2014 31.834 2015 31.713 2016 30.527 2017 28.978 2018 29.025 2019 28.572 2020 28.038 2021 27.548 2022 27.08