Year	ages 15+
2000	20.6340694264565
2005	18.4020147724455
2010	16.5036645244415
2011	16.1718385988537
2012	15.883934903129
2013	15.5930367583951
2014	15.2999255581901
2015	15.0370712346706
2016	14.8221320339766