Year	% female
1971	51.21131
1972	51.21131
1978	46.34146
1991	50.59222
1992	49.34696
1994	48.98072
1995	47.11643
1996	47.3851
1997	47.31631
1998	46.72802
1999	49.90109
2000	48.45618
2001	48.91688
2008	47.4622
2009	48.93849
2010	50.71429
2011	49.60227
2012	49.71687
2013	50.08557
2014	49.4863
2015	49.25983
2016	50.12494
2017	49.50446
2018	49.8738
2019	49.57265