Year	% female
1971	33.24937
1972	31.84143
1973	31.56288
1976	27.56734
1977	21.17452
1978	37.34861
1979	37.39394
1980	45.20949
1981	45.29412
1982	32.91139
1984	46.7424
1985	47.60466
1986	44.98285
1987	43.10507
1988	44.17331
1989	43.94168
1990	41.77575
1991	47.69066
1992	39.13338
2001	37.76925
2009	37.07523
2010	33.95538
2011	37.75926
2012	37.27273
2016	44.21573
2017	42.14411