Year	% female
1971	41.69279
1972	36.48029
1973	39.49329
1974	34.26715
1975	37.01578
1976	35.4902
1977	22.63849
1979	37.32375
1980	42.21204
1981	38.65016
1982	47.85306
1983	41.14698
1984	46.34907
1985	52.27984
1986	50.22693
1999	52.68136
2000	52.22544
2001	50.75305
2003	50.19271
2004	49.65646
2005	49.21541
2006	49.49135
2007	49.40798
2008	48.55916
2009	48.59141
2010	47.45294
2011	46.10658
2012	46.38618
2013	46.87521
2014	44.19807
2015	44.14952
2016	43.22344
2017	41.31922
2018	39.13744