Year	% female
1971	49.59323
1972	56.238
1974	56.87916
1975	57.88085
1976	59.14621
1982	58.93707
1984	58.77253
1985	59.94894
1986	59.2961
1987	56.38808
1988	60.02625
1989	60.4458
1991	54.18729
1994	55.69402
2000	57.43796
2001	54.45618
2002	55.87839
2003	55.99949
2004	55.6032
2005	56.09496
2007	52.43816
2008	52.28932
2009	50.4272
2010	50.07877
2017	48.28439
2018	48.91925