Year	ages 15+
2000	38.3037039578308
2005	35.7888911597365
2010	33.4607307874771
2011	33.070890416049
2012	32.6535793052606
2013	32.2150565158174
2014	31.8355595802542
2015	31.3931998082331
2016	30.9814314470003