Year	% female
1971	51.11071
1972	51.34538
1973	51.36331
1974	51.44036
1975	51.6216
1976	50.93155
1977	51.83
1978	51.82574
1979	51.84277
1980	51.7099
1981	51.7521
1982	51.67631
1983	51.60539
1984	51.84383
1985	51.88372
1986	52.04904
1987	51.93555
1988	51.97844
1989	51.97224
1990	52.34032
1991	52.33666
1992	52.74173
1993	52.8258
1994	52.69496
1995	52.81472
1996	52.73558
1997	52.76086
1998	52.48106
1999	52.35304
2000	52.0929
2001	51.77593
2002	51.55885
2003	51.746
2004	51.70583
2005	51.72051
2006	51.76786
2007	51.76991
2008	51.70702
2009	51.47238
2010	51.11239
2011	51.09288
2012	50.81776
2013	50.71707
2014	50.56351
2015	50.53283
2016	50.45856
2017	50.41998