Year	% female
1971	36.48377
1972	36.47254
1973	38.59059
1974	40.71906
1975	42.84132
1976	44.96453
1977	47.09052
1978	49.21147
1979	49.23095
1980	49.25487
1981	49.26231
1982	49.17972
1983	49.05032
1984	48.85841
1985	48.66094
1986	48.90354
1987	48.93248
1988	48.85329
1989	48.80141
1990	48.68996
1991	49.11844
1992	48.92357
1993	48.72294
1994	48.57475
1995	49.06159
1996	48.74956
1997	49.16835
1998	49.58796
1999	49.32736
2000	49.01089
2001	49.02363
2002	48.48289
2003	48.70234
2004	49.09971
2005	49.051
2006	48.53361
2007	48.83639
2008	48.58659
2009	49.00424
2010	48.93205
2011	48.80525
2012	48.89076
2013	48.8569
2014	49.10564
2015	49.13223
2016	48.79735
2017	48.82831
2018	48.82823