Year	% female
1971	4.41075
1972	3.62225
1974	5.78827
1976	8.07601
1985	16.25635
1986	21.49771
1987	22.94246
1989	24.51072
1990	22.80702
1994	29.10871
1995	27.52518
1996	32.39918
1997	32.82937
1998	31.5833
1999	30.57192
2000	31.63142
2001	32.40012
2002	33.09839
2003	36.75115
2004	40.81377
2005	37.89231
2006	35.40389
2007	45.52198
2008	48.95357
2009	40.20816
2010	38.05675
2011	37.17478
2012	39.08096
2013	38.92876
2014	38.53545
2015	35.21841
2016	37.19677