Year	% female
1971	16.8352603912354
1972	16.2091999053955
1973	16.6047897338867
1974	16.4450206756592
1975	17.8220996856689
1976	17.7831192016602
1977	18.4593391418457
1978	19.0514907836914
1979	20.9863891601562
1980	21.1221904754639
1981	24.6004791259766
1982	23.5527496337891
1983	25.8707599639893
1984	26.4995307922363
1986	24.9682102203369
1987	23.2834491729736
1988	24.369930267334
1989	25.2484607696533
1990	26.3055000305176
1991	24.8751201629639
2005	15.2159900665283
2008	12.5450496673584
2009	14.1745796203613
2010	14.3386697769165
2011	17.5570602416992
2012	19.9467792510986
2016	19.0856895446777
2017	19.0139999389648