Year	% female
1970	46.64277
1971	46.1811
1972	47.03227
1973	46.70702
1974	47.30019
1975	47.37875
1976	47.07743
1977	47.15425
1978	47.08542
1979	47.16676
1980	47.17304
1981	47.20978
1982	47.2873
1983	47.27706
1984	47.33179
1985	47.38807
1986	47.47801
1987	47.46922
1988	47.4955
1989	47.56634
1990	47.6323
1991	47.57354
1992	47.4076
1993	47.40186
1994	47.40068
1995	47.53881
1996	47.46781
1997	47.45437
1998	47.69065
1999	47.67787
2000	47.56341
2001	47.80118
2002	47.88517
2003	47.81168
2004	47.69041
2005	47.86028
2006	47.76738
2007	47.70548
2008	47.8764
2009	47.76633
2010	47.90357
2011	47.9982
2012	48.124
2013	48.21182
2014	47.9984
2015	48.06371
2016	48.09629
2017	48.14643
2018	48.16289