Year	% female
1970	36.39144
1971	39.38462
1974	54.26009
1975	55.55556
1976	50.28571
1992	49.09308
1993	49.61987
1998	50.6392
1999	51.12757
2000	51.40899
2001	50.95296
2002	52.58686
2003	52.43632
2004	52.80769
2005	51.94521
2006	51.15023
2007	50.76639
2008	50.1866
2009	50.01377
2010	49.89041
2011	49.28044
2012	49.1336
2013	49.66714
2014	50.0432
2015	50.04894
2016	49.77545
2017	49.69717