Year	% female
1971	47.64403
1972	47.71477
1973	47.7868
1974	47.82258
1975	47.87678
1976	47.90174
1977	47.9321
1978	47.99665
1979	48.02438
1980	48.07084
1981	48.11079
1982	48.2522
1983	48.33222
1984	48.38909
1985	48.48323
1986	48.52858
1987	48.52524
1988	48.5468
1989	48.54924
1990	48.54762
1991	48.5606
1992	48.55668
1993	48.60666
1994	48.54742
1995	48.51698
1996	48.43962
1997	48.35542
1998	48.27805
1999	48.26208
2000	48.23884
2001	48.25759
2002	48.28652
2003	48.36037
2004	48.3826
2005	48.39244
2006	48.46111
2007	48.47359
2008	48.51074
2009	48.55905
2010	48.59671
2011	48.61217
2012	48.59736
2013	48.63816
2014	48.68325
2015	48.66598
2016	48.64516
2017	48.56428
2018	48.55671