Year per 1,000 female adults 1960 151.425 1961 144.417 1962 141.545 1963 139.182 1964 135.16 1965 129.732 1966 128.447 1967 124.951 1968 124.613 1969 121.17 1970 119.001 1971 116.614 1972 113.185 1973 110.192 1974 107.77 1975 106.041 1976 104.27 1977 103.215 1978 102.069 1979 101.758 1980 107.131 1981 110.204 1982 115.846 1983 119.532 1984 107.04 1985 101.742 1986 98.079 1987 97.151 1988 92.646 1989 92.291 1990 88.964 1991 91.178 1992 80.574 1993 78.878 1994 74.292 1995 77.117 1996 74.373 1997 74.445 1998 74.236 1999 72.956 2000 71.252 2001 69.914 2002 69.138 2003 70.424 2004 64.422 2005 65.405 2006 62.428 2007 62.98 2008 60.814 2009 60.202 2010 58.298 2011 55.218 2012 53.735 2013 50.612 2014 49.555 2015 51.413 2016 46.875 2017 47.736 2018 44.973 2019 42.734 2020 45.153 2021 43.245 2022 41.98