Year per 1,000 people 1960 41.765 1961 41.995 1962 42.321 1963 42.601 1964 42.766 1965 42.955 1966 43.115 1967 43.285 1968 43.492 1969 43.638 1970 43.694 1971 43.854 1972 43.947 1973 44.069 1974 44.062 1975 43.901 1976 43.534 1977 42.939 1978 42.335 1979 41.009 1980 40.573 1981 39.734 1982 38.632 1983 38.549 1984 38.52 1985 38.459 1986 38.533 1987 38.718 1988 38.938 1989 39.336 1990 40.556 1991 40.071 1992 39.058 1993 37.827 1994 36.33 1995 34.61 1996 33.069 1997 32.621 1998 32.567 1999 32.272 2000 31.405 2001 30.387 2002 29.68 2003 29.18 2004 29.012 2005 29.009 2006 29.005 2007 29.292 2008 29.73 2009 30.114 2010 30.423 2011 30.776 2012 31.054 2013 30.879 2014 30.716 2015 30.394 2016 30.051 2017 29.503 2018 29.008 2019 28.433 2020 27.876 2021 27.439 2022 26.921