Year	per 1,000 female adults
1960	89.322
1961	86.202
1962	85.239
1963	84.604
1964	84.614
1965	84.551
1966	87.249
1967	84.104
1968	85.252
1969	87.753
1970	87.155
1971	84.391
1972	84.68
1973	85.749
1974	80.004
1975	79.025
1976	77.716
1977	78.267
1978	77.292
1979	76.34
1980	72.17
1981	72.248
1982	71.963
1983	72.243
1984	69.878
1985	70.561
1986	72.071
1987	69.564
1988	67.211
1989	70.704
1990	67.118
1991	68.031
1992	67.563
1993	68.717
1994	68.219
1995	67.153
1996	67.236
1997	67.4
1998	65.936
1999	67.351
2000	67.172
2001	66.506
2002	66.999
2003	66.203
2004	63.509
2005	61.402
2006	59.326
2007	57.41
2008	57.538
2009	55.941
2010	54.912
2011	55.696
2012	53.79
2013	51.226
2014	50.465
2015	49.464
2016	51.048
2017	47.246
2018	46.774
2019	45.049
2020	44.606
2021	47.596