Year	% of people ages 15 and above
1981	25.7251892089844
1998	42.6993103027344
2005	49.8736381530762
2006	54.1512107849121
2007	52.1368293762207
2008	55.5263710021973
2009	54.8926391601562
2010	55.3751907348633
2011	54.7380218505859
2012	56.7643394470215
2013	55.5949897766113
2014	56.9771499633789
2017	59.1320495605469
2018	57.010570526123
2019	57.9988594055176