Year	ages 15+
2000	17.7325795672099
2005	16.3290578342286
2010	15.1806934526451
2011	15.0114897196214
2012	14.8230331754396
2013	14.6869906166122
2014	14.481228557197
2015	14.2990217254807
2016	14.1580447210714