Year	% female
1970	51.94405
1971	51.95956
1972	52.34371
1973	52.45285
1974	52.50919
1975	52.19708
1976	51.95797
1977	52.04163
1978	51.85954
1979	51.79063
1980	51.63014
1981	51.50646
1982	51.86255
1983	51.71797
1984	51.73976
1985	51.84245
1986	51.96127
1987	51.78204
1988	51.84398
1989	51.80744
1990	51.92617
1991	52.26712
1992	52.70605
1993	52.67595
1994	52.84932
1995	53.1224
1996	53.0002
1997	52.76763
1998	52.52146
1999	52.20643
2000	51.97456
2001	51.87971
2002	51.28612
2003	51.19094
2004	51.44812
2005	51.48037
2006	51.4999
2007	51.59854
2008	51.72831
2009	51.80763
2010	51.76019
2011	51.70384
2012	51.62579
2013	51.21866
2014	51.11193
2015	51.03632
2016	50.94354
2017	51.05251
2018	51.04852