Year per 1,000 people 1960 10.728 1961 10.146 1962 9.577 1963 9.082 1964 8.571 1965 8.141 1966 7.912 1967 7.802 1968 7.585 1969 7.62 1970 7.472 1971 7.399 1972 7.377 1973 7.739 1974 7.433 1975 7.426 1976 7.443 1977 7.344 1978 7.252 1979 7.075 1980 7.185 1981 7.192 1982 7.161 1983 6.929 1984 6.668 1985 6.409 1986 6.361 1987 6.37 1988 6.283 1989 6.24 1990 6.159 1991 6.121 1992 6.069 1993 6.055 1994 6.007 1995 5.984 1996 5.985 1997 6.016 1998 6.036 1999 6.116 2000 6.457 2001 6.565 2002 6.999 2003 6.875 2004 6.866 2005 6.885 2006 6.9 2007 7.052 2008 7.141 2009 7.141 2010 7.113 2011 7.114 2012 7.212 2013 7.424 2014 7.584 2015 8.05 2016 7.885 2017 7.703 2018 7.832 2019 7.941 2020 8.078 2021 8.859 2022 8.235