Year	% female
1971	18.93863
1972	30.76616
1973	26.83434
1974	31.48073
1976	27.73145
1978	25.33141
1979	27.08752
1980	29.32992
1981	29.05002
1982	31.30055
1983	16.30452
1984	20.56377
1987	29.63426
1988	25.60889
1989	30.18868
1990	25.19642
1991	25.88348
1992	23.95044
1993	32.10287
1994	29.82545
1995	29.85091
1996	38.68828
1997	33.08658
1998	33.12325
1999	40.00149
2000	36.54079
2001	38.65941
2002	39.92601
2003	40.38472
2004	40.52283
2005	40.47303
2006	40.94932
2007	50.90962
2008	41.13622
2009	41.13577
2010	41.13657
2011	41.13616
2013	41.82022
2014	36.19487
2015	41.15142
2016	41.11478
2017	39.97944
2018	40.80944