Year	% female
1981	49.06663
1986	49.36205
1991	47.44637
1992	47.72577
1993	47.70056
1994	46.92227
1995	48.33528
1996	48.39266
1997	48.21024
1998	48.46993
1999	48.44829
2000	48.68435
2001	48.54571
2002	48.5534
2003	48.53603
2004	48.55771
2005	48.59176
2006	48.40582
2007	48.32283
2008	48.06107
2009	48.11886
2010	48.30391
2011	48.26745
2012	48.56943
2013	48.63063
2014	48.81654
2015	48.92723
2016	48.83886
2017	48.83519