Year	% of people ages 15 and above
1976	65.5865478515625
1977	65.8783264160156
1978	66.5010375976562
1979	67.1550064086914
1980	67.583381652832
1981	68.2919082641602
1982	68.8494873046875
1983	69.5503997802734
1984	70.2085189819336
1985	70.8033981323242
1986	71.3579177856445
1987	72.0486831665039
1988	73.7701568603516
1989	74.303840637207
1990	74.6057662963867
1991	75.1987609863281
1992	75.645751953125
1993	76.0596237182617
1994	76.4627685546875
1995	76.8689422607422
1996	77.258171081543
1997	79.2486801147461
1998	80.4339294433594
1999	80.7684020996094
2000	80.8745193481445
2001	81.2043304443359
2002	81.5719833374023
2003	82.065559387207
2004	82.4389419555664
2005	82.3777694702148
2006	82.4636535644531
2007	82.9280624389648
2008	83.2566604614258
2009	83.5131988525391
2010	84.1600036621094
2011	84.3226470947266
2012	84.7610626220703
2013	84.8601379394531
2014	85.433708190918
2015	85.6018295288086
2016	86.0611572265625
2017	86.2882308959961
2018	86.3390502929688
2019	86.4896011352539
2020	86.7115097045898
2021	86.8527526855469
2022	87.0117492675781