Year	per 1,000 female adults
1960	109.559
1961	105.669
1962	108.954
1963	109.04
1964	102.391
1965	102.239
1966	98.102
1967	98.64
1968	99.212
1969	100.225
1970	94.922
1971	92.15
1972	92.184
1973	90.388
1974	86.385
1975	86.253
1976	84.412
1977	80.795
1978	78.448
1979	76.723
1980	76.868
1981	74.209
1982	71.604
1983	71.9
1984	68.712
1985	67.443
1986	67.132
1987	64.986
1988	63.787
1989	62.039
1990	61.131
1991	61.15
1992	59.368
1993	58.708
1994	57.841
1995	57.53
1996	56.588
1997	53.817
1998	53.88
1999	50.984
2000	50.685
2001	49.7
2002	49.132
2003	47.786
2004	44.996
2005	44.227
2006	42.889
2007	42.189
2008	41.701
2009	41.987
2010	40.179
2011	40.484
2012	39.701
2013	38.636
2014	37.507
2015	38.612
2016	37.319
2017	37.787
2018	36.495
2019	35.534
2020	37.48