Year	% female
1981	42.39921
1986	44.1812
1991	48.19154
1992	47.77061
1993	47.61458
1994	47.90343
1995	47.2734
1996	48.68341
1997	48.63531
1999	48.80949
2000	48.80704
2001	48.99858
2002	48.76472
2003	48.71975
2004	49.07743
2005	48.76023
2006	49.75241
2008	48.66367
2013	47.84925
2014	47.82937
2015	47.57624
2016	47.30988
2017	47.14191
2018	47.28394