Year	ages 15+
2000	18.9995621041528
2005	18.4839242372229
2010	18.7788855042832
2011	18.8436484749247
2012	18.8931477946895
2013	19.015488391432
2014	19.1849887851987
2015	19.3531040310409
2016	19.4754277781483