Year per 1,000 female adults 1960 191.436 1961 183.017 1962 173.391 1963 165.141 1964 160.695 1965 154.633 1966 153.205 1967 148.727 1968 148.053 1969 143.099 1970 141.405 1971 137.052 1972 136.207 1973 133.938 1974 129.335 1975 124.366 1976 120.152 1977 119.297 1978 117.949 1979 117.389 1980 115.086 1981 111.682 1982 107.763 1983 103.495 1984 102.237 1985 96.36 1986 93.571 1987 89.028 1988 89.288 1989 87.273 1990 85.321 1991 80.168 1992 77.613 1993 75.832 1994 75.68 1995 74.803 1996 70.188 1997 65.237 1998 60.284 1999 57.91 2000 54.483 2001 53.454 2002 52.14 2003 50.985 2004 49.075 2005 46.187 2006 45.122 2007 44.405 2008 44.113 2009 43.119 2010 42.089 2011 40.452 2012 39.025 2013 37.955 2014 37.04 2015 36.033 2016 35.032 2017 33.979 2018 32.992 2019 31.748 2020 34.295 2021 33.265 2022 30.666