Year	% female
1978	36.61064
1979	37.40217
1980	38.82189
1981	40.84574
1982	41.48409
1983	41.07133
1984	41.41943
1985	41.54099
1986	42.84947
1987	43.63016
1988	44.39598
1989	44.3443
1990	45.1785
1991	44.36596
1992	44.75857
1993	44.06924
1994	44.11131
1995	44.465
1996	44.34167
1998	45.53748
1999	46.58395
2000	46.04181
2001	45.75844
2002	45.32223
2003	45.54674
2004	45.20605
2005	44.25761
2006	44.16396
2007	44.0743
2008	43.69819
2009	43.50751
2010	43.28316
2011	44.74756
2012	44.8802
2013	44.52917
2014	44.28736
2015	44.32349
2016	44.14574
2017	42.2664