Year	% female
1970	48.76254
1971	48.71549
1972	48.65205
1973	48.88355
1974	48.99144
1975	49.50838
1976	49.69516
1977	49.52415
1978	49.58158
1979	49.63953
1980	49.94324
1981	49.7759
1982	49.60628
1983	49.44527
1984	49.25144
1985	49.38375
1986	49.62223
1987	49.50347
1988	49.63065
1989	49.86341
1990	49.86373
1991	49.85652
1992	49.95576
1993	49.92759
1994	50.0472
1995	49.88251
1996	50.02271
1997	49.95431
1998	49.86417
1999	49.64607
2000	49.67983
2001	49.56493
2002	49.64126
2003	49.52241
2004	49.28862
2005	49.38339
2006	49.62281
2007	49.62448
2008	49.80413
2009	49.83363
2010	49.98378
2011	49.94128
2012	49.95831
2013	49.90199
2014	49.92218
2015	49.87941
2016	49.88498
2017	49.97588
2018	49.91619