Year	% female
1970	32.68839
1971	32.67315
1972	33.30979
1973	33.8311
1974	34.37271
1975	34.59919
1976	35.25044
1977	35.85907
1978	36.27999
1979	36.81655
1980	37.22667
1981	37.79942
1982	38.34012
1983	38.89237
1984	39.32137
1985	39.7654
1986	40.02255
1987	40.29249
1988	40.6074
1989	40.98683
1990	41.66509
1991	42.29282
1992	42.87678
1993	43.35284
1994	43.65087
1995	44.3657
1996	44.76417
1997	45.28855
1998	45.75003
1999	46.20773
2000	46.49195
2001	46.61931
2002	46.77545
2003	46.96749
2004	47.13885
2005	47.35812
2006	47.5067
2007	47.80955
2008	47.57756
2009	47.48409
2010	47.43446
2011	47.41014
2012	47.31603
2013	47.21668
2014	47.13528
2015	47.12234
2016	47.18566
2017	47.17344
2018	47.25132