Year	ages 15+
2000	36.3840014728712
2005	33.460066289784
2010	30.8526601375325
2011	30.4160064675087
2012	29.9302814892962
2013	29.4660658298979
2014	29.0182663829234
2015	28.6075108780597
2016	28.2110076593151