Year	% of people ages 15 and above
1997	86.0769577026367
2004	92.4775085449219
2006	93.4508666992188
2007	93.7617034912109
2008	94.0098419189453
2009	94.4301834106445
2010	94.7174835205078
2011	95.0258178710938
2012	95.671012878418
2013	96.046028137207
2014	96.2129287719727
2015	96.4771194458008
2016	96.7191925048828
2017	96.9244003295898
2018	97.2186126708984
2019	97.3782577514648
2020	97.5144577026367
2022	97.8438415527344