Year	% female
1971	43.78453
1972	48.54772
1973	42.83668
1974	54.38202
1975	47.57282
1976	62.29321
1983	50.51669
2002	50.25543
2003	50.21916
2004	49.90769
2005	50.28097
2006	49.93495
2007	49.43703
2008	49.208
2009	48.85028
2010	48.28776
2011	47.92017
2012	48.0038
2013	48.00661
2014	47.99722
2015	47.69056
2016	49.12994
2017	48.64203
2018	48.34921