Year	% female
1972	44.79857
1974	51.36153
1975	54.0591
1977	51.69626
1978	42.00841
1992	50.24808
2000	50.2464
2007	51.13549
2008	50.18544
2009	51.2446
2010	51.1854
2011	50.14795
2012	53.42956
2014	49.68429
2015	50
2017	48.76898
2018	48.52342