Year	% female
1971	25.30024
1972	23.79286
1973	22.34615
1981	33.98137
1986	39.10228
1987	40.06432
1990	41.51465
1992	39.17045
1993	41.71091
1994	43.73927
1999	44.44133
2000	44.58687
2002	45.31324
2003	44.986
2004	42.67269
2011	49.6921
2013	50.28099
2014	51.06106
2017	50.95283
2018	50.78499