Year	% female
1970	32.04801
1971	32.0134
1972	32.33025
1973	34.45374
1977	32.20578
1978	34.38638
1979	33.59508
1980	31.47035
1981	33.42375
1982	35.03507
1983	28.91219
1984	25.55539
1986	41.20038
1987	43.18041
1989	43.38156
1990	42.87794
1999	46.76645
2000	44.88451
2001	44.64388
2002	42.46736
2004	43.63225
2005	44.61305
2006	44.15374
2007	42.75243
2008	44.69478
2009	45.72097
2010	45.83992
2011	45.23625
2012	46.85996
2013	46.81369
2014	46.33311
2015	46.9195
2016	46.57444