Year	% female
1970	51.96078
1971	37.45704
1972	21.90813
1973	53.22196
1974	41.93038
1975	37.98799
1976	37.22871
1977	36.79061
1978	37.00234
1979	41.62996
1981	45.28536
1982	45.99729
1984	65.19435
1985	63.11337
1986	54.60385
1990	45.29817
1991	45.03043
1993	45.93781
1998	52
1999	41.40625
2001	40.36145
2012	14.59075
2013	6.87961
2014	11.5304
2015	14.28571