Year	% female
1970	52.90964
1971	59.88952
1972	59.03009
1973	56.80491
1974	54.97565
1975	44.56722
1976	54.35779
1977	54.17237
1978	54.97811
1998	56.36769
2002	54.16286
2003	73.04363
2004	47.46045
2005	50.31512
2007	57.64266
2008	57.33766
2009	57.15367
2010	57.27749
2011	56.95416
2012	56.08382
2013	57.14336
2014	55.91833
2015	55.35542
2016	54.90768
2017	54.55577