Year	% female
1970	13.12944
1971	12.34737
1972	11.32889
1973	12.08799
1974	11.83007
1975	11.9969
1976	12.77423
1977	14.2453
1978	14.72301
1981	19.8312
1982	29.81286
1984	30.27423
1985	29.96061
1986	31.87462
1988	31.55284
1991	32.15821
1993	25.79763
1994	20.34748
1995	25.37501
2001	0
2003	24.44685
2004	16.27781
2005	23.36562
2006	25.40252
2007	26.06118
2008	28.63063
2009	31.26018
2010	32.00865
2011	34.45594
2012	34.63026
2013	34.43871
2014	34.62152
2015	34.69429
2016	35.18667
2017	35.03392
2018	35.12363