Year	% female
1970	36.49671
1971	36.32052
1972	35.57424
1973	35.28352
1974	35.8607
1975	37.35054
1976	37.39066
1977	38.36023
1978	39.52525
1979	40.64185
1981	41.9221
1982	42.75917
1984	43.48122
1986	43.93178
1987	44.20359
1988	44.26727
1989	44.23481
1990	44.34735
1991	44.57083
1992	44.57651
1993	45.01653
1994	44.93015
1995	45.27484
1996	44.78061
1997	45.13671
1998	45.15908
2000	44.88235
2001	44.73376
2002	44.39702
2003	44.64073
2004	44.86646
2005	44.35806
2006	44.33631
2008	45.43166
2012	45.46916
2016	46.15865