Year	% female
1972	51.15766
1973	50.21061
1974	50.22388
1975	51.41388
1976	53.11037
1977	49.80745
1980	50.82988
1981	48.24096
1999	48.39609
2000	49.23143
2001	48.43817
2002	50.44853
2004	50.83302
2005	47.76912
2006	49.0169
2007	49.46844
2008	51.93871
2011	48.73691
2012	49.24288
2013	49.98524
2018	49.68354