Year	per 1,000 female adults
1960	106.075
1961	102.56
1962	100.598
1963	104.122
1964	98.527
1965	102.975
1966	101.496
1967	102.468
1968	102.061
1969	103.538
1970	104.323
1971	105.249
1972	103.259
1973	102.789
1974	101.336
1975	101.304
1976	104.969
1977	97.98
1978	99.663
1979	99.869
1980	105.928
1981	103.916
1982	100.643
1983	102.025
1984	102.054
1985	104.488
1986	103.239
1987	103.829
1988	101.435
1989	101.793
1990	101.117
1991	95.335
1992	94.805
1993	94.326
1994	92.219
1995	93.451
1996	87.663
1997	87.251
1998	80.569
1999	82.145
2000	78.859
2001	78.517
2002	75.793
2003	73.484
2004	71.842
2005	69.267
2006	68.409
2007	69.511
2008	67.182
2009	64.924
2010	63.005
2011	59.047
2012	57.616
2013	54.62
2014	51.817
2015	51.397
2016	51.652
2017	47.453
2018	48.343
2019	43.817
2020	43.561
2021	44.448
2022	42.149