Year	% female
1971	39.959
1972	40.52662
1973	40.48372
1974	40.23467
1975	40.41513
1976	40.15478
1977	40.03963
1978	40.16689
1979	40.29422
1980	40.34652
1981	40.52915
1982	41.6234
1983	42.24233
1984	42.92684
1985	42.74751
1986	40.96283
1987	44.38809
1988	44.12629
1989	44.45709
1990	41.69767
1991	41.2422
1992	41.40385
1993	41.73157
1994	45.04635
1995	45.93869
1996	46.70196
1997	45.74965
1998	46.43657
1999	47.20804
2000	47.16295
2001	47.19448
2002	46.80608
2003	46.75945
2004	47.71878
2005	48.60926
2006	48.81235
2007	48.42759
2008	48.18993
2009	47.99653
2010	44.4839
2011	44.34414
2012	44.21761
2013	43.86466
2014	43.81506
2015	44.23472
2016	43.64394
2017	43.22447
2018	42.61983