Year	% of people ages 15 and above
1975	58.9247817993164
1976	59.0856018066406
1977	59.421558380127
1978	60.2114715576172
1979	61.0436782836914
1980	61.5834808349609
1981	62.4480285644531
1982	63.1602897644043
1983	64.0503311157227
1984	64.8835830688477
1985	65.6345825195312
1986	66.337043762207
1987	67.185791015625
1988	69.3665924072266
1989	70.0152130126953
1990	70.3557434082031
1991	71.1709518432617
1992	71.8366775512695
1993	72.415283203125
1994	72.9544525146484
1995	73.5155334472656
1996	74.0469284057617
1997	76.7100219726562
1998	78.3040008544922
1999	78.7304000854492
2000	78.9223175048828
2001	79.3047637939453
2002	79.7539596557617
2003	80.4270477294922
2004	80.8514633178711
2005	80.8280868530273
2006	81.0781021118164
2007	81.6219863891602
2008	82.0057373046875
2009	82.3709106445312
2010	83.2378463745117
2011	83.3502426147461
2012	83.9243087768555
2013	84.0189208984375
2014	84.720588684082
2015	84.9246978759766
2016	85.5015182495117
2017	85.757568359375
2018	85.8781967163086
2019	86.0900268554688
2020	86.4152374267578
2021	86.6206817626953
2022	86.8693313598633