Year	% female
1971	43.29421
1972	43.25358
1973	43.90081
1974	44.79304
1975	45.8465
1976	46.01128
1977	46.1476
1978	46.37917
1979	48.64227
1980	47.4301
1981	47.65114
1982	47.59906
1983	48.69944
1984	48.32989
1985	47.21221
1986	47.21745
1987	47.8561
1988	47.72707
1993	47.32244
1994	49.69421
1995	49.4013
1998	48.48223
1999	48.07759
2000	48.23201
2001	48.47692
2002	48.34581
2003	48.65653
2004	48.49625
2005	48.77919
2006	48.99271
2007	48.96062
2009	50.6106
2010	50.46551
2011	50.42347
2012	50.73014
2013	50.74409
2014	50.83778
2015	50.74214
2016	50.63471
2017	50.597
2018	50.62278