Year	% of people ages 15 and above
1981	40.6948585510254
1982	40.9789199829102
1983	41.3109016418457
1984	41.6882400512695
1985	42.0791893005371
1986	42.4384002685547
1987	42.9160003662109
1988	43.8164901733398
1989	44.4267692565918
1990	44.996711730957
1991	45.2514495849609
1992	45.7734985351562
1993	46.2151412963867
1994	47.0920715332031
1995	47.8587112426758
1996	48.3857688903809
1997	49.1099281311035
1998	50.7171287536621
1999	51.6059684753418
2000	52.0070114135742
2001	52.8677787780762
2002	53.5876808166504
2003	54.2725486755371
2004	55.4500312805176
2005	55.2322082519531
2006	52.7630386352539
2007	53.8254089355469
2008	54.0839500427246
2009	54.6592483520508
2010	57.1832504272461
2011	57.3206214904785
2012	58.1245613098145
2013	59.4882583618164
2014	60.2782592773438
2015	61.5256996154785
2016	63.5242881774902
2017	64.4673614501953
2018	64.6855163574219
2019	65.8197174072266
2020	66.0432815551758
2021	66.6165008544922
2022	66.9641494750977