Year per 1,000 people 1960 46.107 1961 46.243 1962 46.426 1963 46.421 1964 46.463 1965 46.467 1966 46.514 1967 46.527 1968 46.566 1969 46.598 1970 46.685 1971 46.971 1972 47.099 1973 47.289 1974 47.787 1975 48.079 1976 48.051 1977 48.133 1978 48.223 1979 47.881 1980 47.476 1981 47.069 1982 46.705 1983 46.516 1984 45.824 1985 45.189 1986 44.562 1987 44.115 1988 43.873 1989 44 1990 43.791 1991 43.671 1992 43.655 1993 43.745 1994 43.809 1995 43.744 1996 43.515 1997 43.154 1998 42.87 1999 43.249 2000 43.5 2001 43.563 2002 43.563 2003 43.408 2004 43.151 2005 43.075 2006 42.884 2007 42.721 2008 42.681 2009 42.419 2010 42.094 2011 41.798 2012 41.241 2013 40.603 2014 40.069 2015 39.51 2016 39.128 2017 38.689 2018 38.248 2019 37.849 2020 37.467 2021 37.117 2022 36.611