Year	% female
1971	47.93867
1972	47.14056
1974	47.98015
1975	47.55068
1976	47.55474
1977	48.34306
1978	48.01862
1979	48.68757
1980	49.00727
1981	48.76381
1982	48.73819
1983	48.32489
1984	48.38567
1985	48.65907
1986	48.67228
1987	48.63323
1988	48.56701
1989	48.55864
1990	48.36164
1991	48.53238
1992	48.51273
1993	48.49855
1994	48.36202
1995	48.44139
1996	48.42204
1997	48.4798
1998	48.55562
1999	48.63827
2000	48.72589
2001	48.78495
2002	48.81406
2003	48.81512
2004	48.8213
2005	48.76351
2006	48.74145
2007	48.77751
2008	48.798
2009	48.83169
2010	48.87262
2011	48.88663
2012	48.91364
2013	48.89768
2014	48.90757
2015	48.93556
2016	48.97359
2017	49.03784