Year	% female
1971	43.78453
1972	48.54772
1973	42.83668
1974	54.38202
1975	47.57282
1976	62.29321
1983	50.51669
2002	50.63421
2003	50.52101
2004	50.03303
2005	50.34227
2006	49.9583
2007	49.38444
2008	49.03873
2009	48.38978
2010	48.13109
2011	47.92821
2012	48.54494
2013	48.2785
2014	48.05359
2015	48.05195
2016	49.55067
2017	49.74093
2018	49.3913