Year	% female
1973	51.00001
1974	50.99968
1975	50.99588
1976	53.83946
1977	51.00003
1978	50.99998
1979	50.90001
1980	50.90015
1981	50.89985
1982	50.99022
1983	50.99129
1984	50.992
1985	50.99096
1986	50.99123
1987	50.99063
1988	50.99063
1989	50.99063
1990	50.9908
1991	50.99091
1992	50.99102
1993	51.00592
1994	51.00585
1995	51.00585
2013	49.91677
2014	49.76725
2015	49.54353
2016	49.69418