Year	% female
1971	54.52
1972	45.71266
1973	54.50366
1974	51.22207
1975	53.89453
1976	52.27033
1977	51.75767
1978	41.79187
1984	56.72515
1992	50.24808
2000	52.84091
2008	51.08455
2009	52.47301
2010	51.42201
2011	50.50796
2012	54.01543
2014	50.1677
2015	50.13467
2017	48.87159
2018	48.95696