Year	per 1,000 female adults
1960	115.945
1961	109.193
1962	112.524
1963	115.741
1964	118.409
1965	118.808
1966	119.568
1967	117.185
1968	116.934
1969	112.951
1970	118.686
1971	111.435
1972	109.275
1973	105.585
1974	107.599
1975	100.658
1976	98.801
1977	95.82
1978	93.146
1979	86.587
1980	84.086
1981	81.303
1982	82.137
1983	79.381
1984	77.799
1985	78.646
1986	73.677
1987	73.58
1988	71.991
1989	70.172
1990	66.314
1991	65.316
1992	64.999
1993	61.603
1994	62.04
1995	60.378
1996	60.117
1997	59.605
1998	57.991
1999	55.876
2000	56.11
2001	53.636
2002	53.059
2003	50.706
2004	49.508
2005	47.595
2006	48.235
2007	48.119
2008	46.643
2009	47.91
2010	45.704
2011	46.069
2012	44.464
2013	45.018
2014	44.842
2015	45.231
2016	44.785
2017	44.614
2018	43.127
2019	42.391
2020	41.652