Year	ages 15+
2000	13.4295306906453
2005	12.2020995467274
2010	11.1229623610424
2011	10.935861855151
2012	10.7739900788012
2013	10.6117388482972
2014	10.4401403514785
2015	10.299710442626
2016	10.176913734358