Year	% of female population
1960	19.9577536008514
1961	19.9408315703518
1962	19.9537800553309
1963	19.9271797867719
1964	19.842653301426
1965	19.6983217077991
1966	19.5122511947176
1967	19.3101431149233
1968	19.119962383668
1969	18.9627562177663
1970	18.8249606308461
1971	18.6445239539767
1972	18.4701885049798
1973	18.3588358253483
1974	18.2619484078467
1975	18.1505972792321
1976	18.0207309815815
1977	17.9880386033188
1978	18.0519982868494
1979	18.1235673035129
1980	18.2407746028616
1981	18.3807318219454
1982	18.4610065300775
1983	18.5402477580882
1984	18.5794222722377
1985	18.5100865234328
1986	18.4043193426888
1987	18.2386521629058
1988	17.9591894856024
1989	17.6584316976505
1990	17.4006329900692
1991	17.142602948446
1992	16.875494699967
1993	16.6059885321515
1994	16.3257564706552
1995	16.0277635637075
1996	15.724144126046
1997	15.4386682021297
1998	15.2113012942124
1999	15.0734604699798
2000	15.0340452848878
2001	15.0559649371534
2002	15.0920327918054
2003	15.1134000890447
2004	15.1009561340838
2005	15.0665649439369
2006	15.0074598823697
2007	14.9110439510878
2008	14.8032008562823
2009	14.7045142363999
2010	14.6039954936032
2011	14.5213055201641
2012	14.4817527817745
2013	14.4590546765383
2014	14.4144636750063
2015	14.3435191374626
2016	14.2142119101567
2017	13.9722536881101
2018	13.688266045035
2019	13.4282591859418
2020	13.154982459794
2021	12.893511044861
2022	12.7062481571152
2023	12.5362914145968