Year	% female
1970	48.53651
1971	46.44058
1972	48.77916
1973	48.06626
1975	51.09153
1976	48.16752
1977	47.79612
1978	47.63599
1979	48.10421
1980	47.6011
1981	47.85547
1982	48.1259
1983	48.0196
1986	48.36745
1994	47.39702
1995	47.56214
1996	47.59542
1997	48.09459
1998	48.69711
1999	47.64992
2000	48.09106
2001	48.11834
2002	47.96594
2003	47.84443
2004	47.96472
2005	47.88464
2006	47.80115
2007	47.95482
2009	47.51374
2010	48.11636
2011	48.58339
2012	48.50514
2014	48.37012
2015	48.17489
2016	48.37108
2017	48.09408
2018	48.00592