Year per 1,000 female adults 1960 421.543 1961 413.622 1962 405.538 1963 385.325 1964 369.635 1965 350.468 1966 327.691 1967 307.898 1968 289.207 1969 272.374 1970 249.02 1971 280.598 1972 245.407 1973 240.71 1974 243.045 1975 235.63 1976 231.77 1977 227.6 1978 219.635 1979 208.642 1980 200.426 1981 190.339 1982 183.648 1983 173.185 1984 166.835 1985 183.221 1986 190.285 1987 203.984 1988 195.572 1989 192.304 1990 182.479 1991 187.818 1992 203.443 1993 215.188 1994 214.27 1995 223.555 1996 215.146 1997 211.664 1998 204.003 1999 196.446 2000 193.675 2001 188.98 2002 191.16 2003 188.215 2004 182.849 2005 188.81 2006 164.656 2007 158.691 2008 153.873 2009 155.356 2010 151.166 2011 150.977 2012 151.702 2013 147.061 2014 148.155 2015 143.088 2016 143.171 2017 137.509 2018 137.669 2019 137.988 2020 140.36 2021 145.478 2022 142.105