Year	% female
1971	48.40405
1972	48.44651
1973	48.33532
1974	48.37377
1989	48.77816
1990	48.69309
1991	48.93193
1992	48.78401
1993	48.69321
1994	48.69572
1995	48.70585
1996	48.68081
1997	48.65318
1998	48.57026
1999	48.51363
2000	48.4629
2001	48.34632
2002	48.28652
2003	48.26339
2004	48.34908
2005	48.37158
2006	48.43923
2007	48.48507
2008	48.30965
2009	48.36317
2010	48.32648
2011	48.26069
2012	48.23052
2015	48.27793
2016	48.32939
2017	48.27831