Year	% female
1971	48.66517
1972	49.5058
1973	48.53553
1977	48.78281
1978	48.69817
1979	49.151
1980	48.78731
1981	49.21916
1982	49.30616
1983	49.28739
1984	49.31787
1985	49.29315
1986	49.47866
1987	49.19952
1988	49.33953
1989	50.17806
1990	49.61588
1991	49.32563
1992	49.33833
1993	49.44227
1994	49.27381
1995	49.26838
1996	49.37207
1997	48.99398
1998	49.0004
1999	48.68788
2000	47.6658
2001	49.11107
2002	48.70687
2003	48.33523
2004	49.57402
2005	49.37705
2006	48.89662
2007	49.79066
2008	50.10854
2009	50.00642
2014	49.43182
2015	49.68269
2016	49.78673
2017	50.81162