Year	ages 15+
2000	36.9880262042168
2005	34.2781225130546
2010	31.8304543470459
2011	31.4202055749732
2012	30.9748522238333
2013	30.5272594152762
2014	30.1132823553268
2015	29.6939836866517
2016	29.2900593888585