Year	% female
1970	48.84733
1971	48.85443
1972	48.90059
1973	48.96782
1974	48.90724
1975	48.95926
1976	48.92577
1977	48.97903
1978	48.95475
1979	48.96285
1980	48.96408
1981	49.02277
1982	49.09465
1983	49.08804
1984	49.08549
1985	49.09674
1986	49.12008
1987	49.44745
1988	49.47452
1989	48.89855
1990	48.81724
1991	49.09998
1992	49.39268
1993	49.20375
1994	49.27371
1995	49.42597
1996	49.31316
1997	49.16886
1998	49.18864
1999	49.09481
2000	48.92865
2001	48.86145
2002	48.77511
2003	48.64329
2004	49.02155
2005	48.84811
2006	48.74494
2007	48.70091
2008	48.70405
2009	48.71028
2010	48.59903
2011	48.46167
2012	48.44568
2013	48.28155
2014	48.31178
2015	48.38357
2016	48.3764
2017	48.43757
2018	48.44025