Year	% female
1981	49.6
1986	49.60003
1991	49.63929
1992	49.49527
1993	48.85564
1994	48.31637
1995	50.66124
1996	51.12255
1997	51.68034
1998	49.76859
1999	49.22886
2000	49.22569
2001	48.30207
2002	48.42777
2003	48.20656
2004	48.03035
2005	47.92028
2006	47.58654
2007	47.61955
2008	47.4573
2009	47.02833
2010	46.69285
2011	46.26858
2012	46.26467
2013	45.87309
2014	45.73467
2015	45.57556
2016	45.62286
2017	46.30534
2018	46.08246