Year per 1,000 people 1960 9.938 1961 9.501 1962 9.338 1963 8.985 1964 8.712 1965 8.38 1966 8.088 1967 7.814 1968 7.528 1969 7.355 1970 6.912 1971 6.642 1972 6.441 1973 6.244 1974 6.036 1975 5.854 1976 5.704 1977 5.58 1978 5.481 1979 5.406 1980 5.362 1981 5.154 1982 5.079 1983 4.948 1984 4.897 1985 4.879 1986 4.776 1987 4.811 1988 4.777 1989 4.779 1990 4.753 1991 4.688 1992 4.741 1993 4.745 1994 4.82 1995 4.766 1996 4.835 1997 4.677 1998 4.758 1999 4.982 2000 4.964 2001 5.557 2002 5.01 2003 5.384 2004 5.217 2005 5.189 2006 5.289 2007 5.242 2008 5.6 2009 5.62 2010 5.568 2011 5.649 2012 5.683 2013 5.711 2014 5.971 2015 5.996 2016 6.574 2017 6.735 2018 6.864 2019 7.017 2020 7.575 2021 8.124 2022 8.1