Year	ages 15+
2000	30.5331801249704
2005	28.8521286323298
2010	27.5670637131782
2011	27.2002720823983
2012	27.1421009733415
2013	26.8796107203329
2014	26.6452062112326
2015	26.4069108887332
2016	26.2329350192921