Year	% female
1971	49.52502
1972	56.74732
1974	57.03704
1975	58.22058
1976	58.49725
1982	58.81112
1984	58.30322
1985	59.43182
1986	59.20083
1987	56.32328
1988	60.13542
1991	54.73458
2000	56.87571
2001	53.61829
2002	52.38911
2003	51.99501
2004	51.54837
2005	55.2045
2007	52.43816
2008	52.28932
2009	50.4272
2010	50.07877
2011	47.72582
2012	48.48834
2013	48.28747
2014	48.68497
2015	48.7167
2016	49.05604
2017	48.28439
2018	48.91925