Year	ages 15+
2000	23.4936853145276
2005	20.6030238500624
2010	18.1167915575011
2011	17.6533487601753
2012	17.2745404425518
2013	16.8641362801299
2014	16.4892987768154
2015	16.1566255372225
2016	15.8781784016115