Year	% female
1974	62.73463
1975	63.38756
1976	63.75657
1979	65.24833
1980	65.04848
1983	65.21739
1986	49.07041
1991	48.62094
1993	4.9604
1994	49.68236
1995	48.49768
1996	52.07212
1997	52.58224
1998	51.89935
1999	53.87104
2000	50.59994
2001	50.90961
2002	50.71232
2003	49.84615
2004	48.72805
2005	50.19527
2006	46.13218
2009	45.47215
2010	47.14342
2013	42.04384
2014	41.00632
2015	39.25189
2016	38.56941
2017	38.0521
2018	38.38176