Year	% female
1971	45.82062
1972	46.25151
1973	46.52406
1974	46.92671
1975	47.29093
1976	46.63121
1977	46.30186
1978	45.59458
1979	47.29219
1980	47.6873
1981	48.57522
1982	48.58871
1983	49.29672
1984	48.83242
1985	48.75
1986	48.97236
1987	48.27586
1988	48.99068
1989	48.34123
1990	47.67726
1991	46.53465
1992	48.25
1993	48.23529
1994	48.54202
1996	47.70723
1997	47.94872
2000	48.03843
2008	47.55245
2009	47.57653
2010	50.34876
2011	47.21689
2012	45.61626
2018	50.53004