Year	% of people ages 15 and above
1992	74.1431579589844
2006	83.5594635009766
2007	82.0286331176758
2008	83.951301574707
2009	84.1028900146484
2010	84.4927215576172
2011	85.4939880371094
2013	86.767578125
2015	87.9698486328125
2016	88.1417694091797
2017	88.4827117919922
2018	89.0085983276367
2019	89.1379165649414
2020	89.9845275878906