Year	% female
1970	48.93291
1971	48.94096
1972	49.18936
1973	49.18192
1974	49.24145
1975	49.11369
1976	49.07624
1977	49.07517
1978	49.07461
1979	49.07557
1980	49.06598
1981	49.04047
1982	48.93162
1983	48.97578
1984	48.96673
1985	49.06622
1986	48.92262
1987	49.01187
1988	49.06087
1989	49.06597
1990	49.03142
1991	48.91633
1992	48.89263
1993	48.77093
1994	48.66898
1995	48.57315
1996	48.54704
1997	48.46625
1998	48.38752
1999	48.4273
2000	48.36909
2001	48.40222
2002	48.34842
2003	48.45846
2004	48.49065
2005	48.50463
2006	48.53668
2007	48.57139
2008	48.64999
2009	48.63731
2010	48.61539
2011	48.58914
2012	48.68778
2013	48.6955
2014	48.71822
2015	48.86389
2016	48.79499
2017	48.81759
2018	48.8229