Year	% female
1971	44.77205
1972	46.27948
1973	46.66875
1974	46.12838
1975	47.84852
1976	47.62227
1977	47.40363
1978	47.95703
1979	48.51837
1980	48.19823
1981	48.1149
1982	47.3113
1983	47.48456
1984	47.39699
1985	47.74409
1986	47.64002
1987	47.43071
1988	47.39348
1989	47.35846
1990	47.23604
1991	47.57246
1992	47.45311
1993	47.99935
1994	47.81413
1995	48.12584
1996	48.99965
1997	48.90718
1998	46.33629
1999	47.81026
2000	48.19788
2001	48.76651
2002	47.93868
2003	48.31586
2004	48.49046
2005	48.68197
2006	48.7896
2007	48.74289
2008	49.02398
2009	48.89125
2010	48.75624
2011	48.73717
2012	48.95291
2013	49.16527
2014	48.95959
2015	48.98133
2016	48.9353
2017	48.88607
2018	48.8844