Year	% female
1971	44.42614
1972	44.10887
1973	43.96309
1974	44.32345
1975	43.66913
1976	43.43568
1977	43.48891
1978	43.39999
1979	43.77573
1980	44.09301
1981	44.41545
1982	44.29998
1983	44.3
1984	44.30005
1985	43.70898
1987	43.21943
1988	44.39492
1989	44.6112
1990	44.86382
1991	45.2051
1992	45.6557
1993	45.93897
1994	46.10113
1995	46.35843
1999	46.95156
2000	47.1668
2001	47.4415
2002	47.45081
2003	47.57545
2004	47.42586
2005	47.92527
2006	48.49199
2007	48.53507
2008	48.55621
2009	48.55859
2011	48.73102
2012	48.91687
2013	48.94636
2014	48.95182
2015	48.96308
2016	49.28661
2017	49.23339
2018	49.27979
2019	49.31331