Year	% female
1971	54.03419
1972	52.44884
1973	52.46695
1974	52.87305
1975	53.0386
1976	53.48465
1977	53.30802
1978	52.2059
1979	51.47454
1980	50.9911
1981	50.53191
1982	50.51732
1983	51.25515
1984	51.58876
1985	51.7062
1986	51.69534
1987	51.60591
1988	52.10442
1989	52.59226
1990	52.88534
1991	53.25024
1992	53.92218
1993	54.19574
1994	54.06586
1995	53.6947
1996	53.34443
1997	53.33864
1998	53.59651
1999	53.44451
2000	53.33494
2001	53.04822
2002	52.81871
2003	52.03166
2004	51.56746
2005	51.14482
2006	51.08248
2007	51.19904
2008	51.28575
2009	51.49106
2010	51.8618
2011	52.06372
2012	52.60547
2013	52.43958
2014	52.01115
2015	52.06839
2016	52.2767
2017	52.07881
2018	52.03969