Year	% female
1971	44.13395
1972	48.99786
1973	44.55983
1977	47.46111
1978	47.04844
1983	48.89455
1984	48.85977
1987	48.05996
1988	48.40564
1990	47.39179
1991	47.46755
1992	48.86893
1996	48.90084
1998	44.51362
1999	48.65161
2002	48.29395
2003	48.46833
2004	48.69729
2005	48.6215
2007	49.31363
2008	48.97189
2009	49.65521
2010	49.37273
2011	48.80851
2012	48.77998
2013	48.98799
2014	48.59827
2015	48.52354
2016	48.43106
2017	48.67373