Year	% female
1970	48.76923
1971	48.73091
1972	48.53633
1973	48.68002
1974	48.77737
1975	48.63829
1976	48.61018
1977	48.76603
1978	48.71195
1979	48.75922
1980	48.8675
1981	48.82501
1982	48.79962
1983	48.73569
1984	48.73408
1985	48.83781
1986	48.86329
1987	48.86102
1988	48.98169
1989	48.94387
1990	48.99961
1991	48.78607
1992	48.77918
1993	48.66656
1994	48.53747
1995	48.4962
1996	48.44349
1997	48.41691
1998	48.35171
1999	48.40018
2000	48.40621
2001	48.44939
2002	48.45173
2003	48.44314
2004	48.39167
2005	48.33949
2006	48.29901
2007	48.28685
2008	48.28238
2009	48.2601
2010	48.26571
2011	48.28479
2012	48.323
2013	48.40848
2014	48.42534
2015	48.45123
2016	48.48824
2017	48.49925
2018	48.50008