Year	per 1,000 female adults
1960	416.15
1961	412.445
1962	379.692
1963	376.936
1964	376.704
1965	369.55
1966	367.384
1967	362.092
1968	355.643
1969	349.1
1970	346.11
1971	339.849
1972	334.58
1973	331.311
1974	330.811
1975	328.864
1976	325.457
1977	325.552
1978	321.821
1979	319.912
1980	316.051
1981	316.495
1982	317.014
1983	312.139
1984	312.522
1985	311.332
1986	315.01
1987	304.71
1988	303.778
1989	305.599
1990	304.686
1991	305.026
1992	302.919
1993	310.736
1994	319.084
1995	322.27
1996	330.747
1997	332.344
1998	337.789
1999	336.098
2000	337.101
2001	338.496
2002	342.096
2003	337.391
2004	335.716
2005	341.789
2006	335.594
2007	334.223
2008	327.49
2009	323.111
2010	316.641
2011	311.645
2012	304.131
2013	295.688
2014	289.288
2015	278.456
2016	276.406
2017	269.912
2018	260.402
2019	260.365
2020	265.145
2021	280.714
2022	273.611