Year	% of people ages 15 and above
1976	63.1921195983887
1977	63.3594512939453
1978	64.5679016113281
1979	65.9233703613281
1980	66.5814437866211
1981	68.325927734375
1982	69.0026321411133
1983	70.4304122924805
1984	71.5216903686523
1985	72.5598678588867
1986	73.4931411743164
1987	74.7485504150391
1988	79.0273818969727
1989	79.7366790771484
1990	79.5480270385742
1991	80.9431686401367
1992	81.5093231201172
1993	82.0211486816406
1994	82.6097869873047
1995	83.1996765136719
1996	83.7264633178711
1997	89.3849868774414
1998	89.7708587646484
1999	90.0732574462891
2000	90.3848495483398
2001	90.8022232055664
2002	91.1455230712891
2003	91.4904937744141
2004	91.8258590698242
2005	92.1275100708008
2006	92.5447692871094
2007	93.6721496582031
2008	93.935173034668
2009	94.2424697875977
2010	94.421257019043
2011	94.1588287353516
2012	94.3348388671875
2013	94.4324188232422
2014	94.8922805786133
2015	95.0989074707031
2016	95.2626190185547
2017	95.429557800293
2018	95.5298385620117
2019	95.9128875732422
2020	96.2249069213867
2021	96.251106262207