Year	% female
1971	52.8656
1972	53.05193
1973	53.67695
1974	53.73554
1975	53.70256
1976	53.48915
1977	53.12884
1978	53.06887
1979	53.10486
1980	53.18323
1981	53.15639
1982	53.35868
1983	53.45696
1984	53.66862
1985	53.67839
1986	53.34034
1987	53.07726
1988	52.77818
1989	52.54198
1990	52.60581
1991	52.64708
1992	53.05161
1993	52.55026
1994	52.67124
1995	52.72786
1996	52.50183
1997	52.45201
1998	52.23823
1999	52.40612
2000	52.43558
2001	52.40533
2002	52.54118
2003	52.3608
2004	51.62924
2005	51.54427
2006	51.49563
2007	51.64667
2008	51.70955
2009	51.80058
2010	51.75944
2011	51.70286
2012	51.69294
2013	51.82841
2014	51.64702
2015	51.77132
2016	51.82203
2017	51.83089