Year	% female
1971	51.0528
1972	51.25384
1973	51.22486
1974	50.85735
1975	50.74014
1976	51.55211
1977	51.24316
1978	50.81443
1979	51.36181
1980	53.15602
1981	49.84038
1982	51.54929
1983	50.57525
1984	50.70539
1985	50.33978
1989	51.17221
1990	46.88802
1999	50.64329
2000	50.25695
2001	49.41532
2002	49.42507
2003	49.73505
2004	49.65258
2005	49.35101
2006	50.20858
2007	49.97821
2008	50.25323
2009	49.96989
2010	49.56147
2011	50.19801
2014	49.54133
2015	49.58159
2016	49.79872
2017	49.61727
2018	49.59379