Year	% female
1970	34.30338
1971	34.15537
1972	34.09867
1973	34.33374
1974	34.41454
1975	34.138
1976	34.0013
1977	34.05478
1978	34.2754
1979	34.08652
1980	33.99649
1981	34.73428
1982	35.58114
1983	34.2568
1984	33.56901
1985	36.37139
1986	38.9646
1987	39.7483
1988	39.90654
1989	39.95459
1990	40.0269
1991	40.32151
1992	40.47863
1993	40.56572
1994	40.38231
1995	41.53566
1996	41.67878
1997	41.84365
1998	41.84466
1999	42.092
2000	41.62961
2001	41.56512
2002	41.35955
2003	42.34758
2004	41.84364
2005	42.41865
2006	42.14488
2007	41.72378
2008	42.50449
2009	42.92679
2010	43.28079
2011	43.50794
2012	44.13516
2013	44.52824
2014	44.31744
2015	44.69247
2016	44.69219
2017	44.8496
2018	45.01476