Year	ages 15+
2000	27.6605822944757
2005	25.0943623373716
2010	23.0506833664086
2011	22.6077181691134
2012	22.3533697797323
2013	21.9847360777443
2014	21.6261375462858
2015	21.2953686314483
2016	20.9965570348349