Year	% female
1971	50.53658
1972	50.63312
1973	50.65526
1974	50.62263
1978	50.9143
1979	50.85625
1980	51.03728
1981	51.1444
1982	51.12274
1983	51.15559
1984	51.25491
1985	51.31696
1986	51.32292
1987	51.21379
1988	51.17905
1989	51.32212
1990	51.40566
1991	51.46741
1992	51.45187
1993	51.53859
1994	51.5198
1995	51.43102
1996	51.47056
1998	51.6457
1999	51.70133
2000	51.63793
2001	51.88546
2002	51.80385
2003	51.70363
2004	51.57494
2005	51.40819
2006	51.29042
2007	51.30371
2008	51.39222
2009	51.1889
2010	50.94761
2011	50.70747
2012	50.51215
2013	50.79139
2014	51.25156
2015	51.37672
2016	50.78559
2017	50.81118