Year	% female
1971	40.12047
1973	43.46275
1974	49.7603
1982	51.31745
1983	51.86741
1985	50.02512
1989	51.8511
1992	52.94381
1994	52.63124
1995	52.86588
1996	52.35205
1997	52.82293
1998	53.09484
1999	52.92803
2000	52.81216
2001	53.3267
2002	53.19292
2003	53.00248
2004	53.19743
2005	53.15122
2006	53.43015
2007	53.7563
2008	53.86005
2009	53.69698
2010	53.77213
2011	53.73359
2012	53.62476
2013	53.57967
2014	53.51982
2015	53.15423
2016	53.03486
2017	53.08042
2018	53.07088