Year	% female
1970	47.86775
1971	47.85924
1972	47.90252
1973	48.07322
1974	47.96562
1975	48.33391
1976	48.41626
1977	48.52933
1978	48.64849
1979	48.68143
1980	48.83446
1981	49.13037
1982	48.96831
1983	49.16673
1984	49.13266
1985	49.17407
1986	49.25566
1987	49.29878
1988	49.27872
1989	49.13541
1990	49.11367
1991	49.22189
1992	49.34333
1993	49.20212
1994	49.04563
1995	49.10519
1996	49.15977
1997	49.08281
1998	49.12399
1999	49.11579
2000	49.03379
2001	49.0429
2002	48.98534
2003	49.00336
2004	49.01108
2005	48.93676
2006	48.87686
2007	48.86024
2008	48.84404
2009	48.69315
2010	48.60907
2011	48.5495
2012	48.49812
2013	48.76789
2014	48.75428
2015	48.70241
2016	48.66753
2017	48.57243
2018	48.57699