Year	% female
1970	47.88704
1971	48.81936
1972	47.50198
1973	47.98184
1974	48.58925
1975	48.93776
1976	49.25297
1977	49.5846
1978	49.38551
1979	49.80498
1981	47.25254
1982	47.87742
1983	47.24613
1984	49.30366
1985	50.00342
1986	49.3064
1990	48.14441
1991	49.23766
1992	47.69485
1993	47.83921
1998	50.6954
1999	50.57912
2001	49.80071
2003	48.92322
2004	50.63899
2012	49.59664
2013	49.74018
2014	51.06324
2015	49.80845