Year	% female
1973	25.07966
1976	24.4165
1977	21.05839
1979	20.0823
1980	23.93886
1981	18.63646
1984	28.58784
1985	28.00933
1986	31.11211
1987	30.68966
1988	31.48986
1989	32.24384
1990	32.85393
1998	47.43518
1999	48.73194
2000	49.6797
2001	50.92078
2002	51.33841
2003	51.31491
2004	49.57885
2005	50.55284
2006	50.38455
2007	50.32442
2008	51.97693
2009	50.90071
2010	51.88096
2011	52.52608
2012	52.19005
2013	50.90999
2015	51.89476
2016	51.36834
2017	52.80007
2018	52.63983