Year	% female
1973	31.1003
1978	18.31688
1979	18.1435
1980	16.91035
1981	16.74276
1982	16.17076
1983	17.547
1985	17.51486
1986	16.76881
1987	18.66823
1990	23.43624
1991	22.07857
1992	28.36859
1993	29.42705
1994	29.58539
1995	30.13514
1999	26.23341
2000	27.8296
2001	28.09866
2002	28.05611
2004	27.87373
2005	29.81769
2006	30.77011
2007	30.68284
2008	30.56262
2009	32.58674
2010	33.62437
2011	34.07654
2012	34.11896
2013	34.13128
2014	34.1172
2015	34.27198
2017	32.62083