Year	% female
1971	20.64273
1972	20.68731
1973	25.04465
1974	31.00538
1975	32.4358
1976	38.97012
1977	39.1619
1978	44.73047
1979	43.88542
1980	39.07388
1981	22.96655
1982	39.12557
1983	46.55387
1984	51.50443
1985	53.23882
1986	35.91353
1987	37.41935
1988	26.1587
1989	27.01362
1990	50.50465
1991	45.79381
1992	46.22355
1993	45.9203
1994	44.0699
1995	44.81102
1996	45.97315
1997	45.69666
1998	45.97632
1999	44.41845
2000	44.35133
2001	44.83078
2002	42.70079
2003	42.49602
2004	39.06607
2005	40.99965
2006	41.53736
2007	42.30395
2008	38.49299
2009	38.1233
2010	38.68329
2011	38.69742
2012	38.43798
2017	33.85807
2018	34.28771