Year	% female
1971	57.12007
1972	57.30774
1998	57.964
1999	59.41292
2000	47.39291
2001	47.40471
2002	47.48656
2003	47.63855
2004	47.68585
2005	47.83621
2006	48.17212
2007	48.48275
2008	48.78279
2009	49.21814
2010	49.21174
2011	49.50741
2012	49.32377
2013	49.41372
2014	49.36858
2015	49.08433
2016	49.03613
2017	49.00135
2018	49.00427