Year	% female
1971	48.72164
1972	48.85133
1973	48.89958
1974	49.06086
1975	49.08996
1976	48.87577
1977	49.05107
1983	48.63298
1984	48.62737
1986	48.75015
1987	48.75
1988	48.94854
1989	49.11487
1993	48.77176
1994	48.77762
1995	48.66497
1996	48.87239
1997	48.85829
1998	48.55075
1999	48.16999
2000	48.30573
2001	48.52451
2002	48.56507
2003	48.43343
2004	48.35399
2005	48.28001
2006	48.62759
2007	49.02938
2008	49.09334
2009	49.12927
2010	49.28301
2011	49.32726
2012	49.35516
2013	49.05673
2014	48.89937
2015	48.95799
2016	48.74014
2017	48.58197