Year per 1,000 female adults 1960 550.189 1961 543.6 1962 537.703 1963 531.856 1964 526.179 1965 520.698 1966 514.339 1967 508.496 1968 502.464 1969 496.613 1970 490.203 1971 483.941 1972 477.325 1973 470.742 1974 464.507 1975 458.609 1976 452.685 1977 446.568 1978 453.421 1979 462.727 1980 456.101 1981 449.554 1982 471.749 1983 465.209 1984 515.459 1985 511.766 1986 448.188 1987 442.407 1988 401.952 1989 390.109 1990 382.051 1991 373.966 1992 362.387 1993 333.348 1994 326.338 1995 319.863 1996 311.9 1997 308.249 1998 316.547 1999 295.841 2000 290.083 2001 284.871 2002 282.338 2003 270.723 2004 264.795 2005 259.868 2006 254.511 2007 247.96 2008 241.256 2009 236.917 2010 231.583 2011 225.563 2012 220.219 2013 214.871 2014 212.215 2015 209.573 2016 204.096 2017 196.522 2018 193.284 2019 190.261 2020 210.053 2021 214.241 2022 203.017