Year	% of people ages 15 and above
1980	46.7194290161133
1981	46.7186813354492
1982	47.3641891479492
1983	47.6773986816406
1984	47.9865188598633
1985	48.2978897094727
1986	48.6197814941406
1987	49.2756309509277
1988	49.9412117004395
1989	50.4821510314941
1990	51.1699600219727
1991	52.1685218811035
1992	53.7336196899414
1993	55.5847816467285
1994	56.3583793640137
1995	57.1568794250488
1996	58.0208892822266
1997	58.8620681762695
1998	59.7652206420898
1999	60.5018310546875
2000	57.4860000610352
2001	58.4077110290527
2002	59.0796012878418
2003	59.8598594665527
2004	60.9894485473633
2005	60.3049583435059
2006	66.2328262329102
2007	59.4409103393555
2008	60.8299713134766
2009	61.6337394714355
2010	62.1023902893066
2011	62.1597213745117
2012	63.5816497802734
2013	63.4453887939453
2014	64.3482666015625
2015	64.9517364501953
2016	65.6693267822266
2017	66.4344863891602
2018	65.9780883789062
2019	66.4268264770508
2020	66.8073425292969
2021	67.1697769165039
2022	67.5332183837891