Year	% female
1971	46.8369
1972	47.01586
1973	47.3164
1974	48.53651
1975	48.95227
1976	49.08743
1977	49.49773
1978	49.59236
1979	50.22621
1980	50.55823
1981	50.83649
1982	50.85855
1983	50.76276
1984	50.72703
1985	50.54301
1986	50.39202
1987	50.56839
1988	50.29474
1989	50.38523
1990	50.70625
1991	50.76438
1992	50.52342
1993	50.57223
1994	50.59954
1995	50.44364
1996	50.8377
1997	50.31062
1998	50.37607
1999	50.041
2000	50.03612
2001	50.07226
2002	50.27979
2003	50.38994
2004	50.50907
2005	50.26006
2006	50.2022
2007	50.15597
2008	50.17166
2009	50.06804
2010	49.63618
2011	49.52915
2012	49.46705
2013	49.31596
2014	49.42711
2015	49.30355
2016	49.38963
2017	49.5903