Year	% of people ages 15 and above
1975	46.0865516662598
1976	46.2193489074707
1977	46.748348236084
1978	47.294620513916
1979	47.8121910095215
1980	48.3638801574707
1981	48.5520782470703
1982	49.4505805969238
1983	50.0200386047363
1984	50.6237716674805
1985	51.2383918762207
1986	51.7694816589355
1987	52.6223411560059
1988	53.3190689086914
1989	54.0430908203125
1990	54.9113388061523
1991	55.4603881835938
1992	56.438549041748
1993	57.2519416809082
1994	57.9913597106934
1995	58.7825584411621
1996	59.5424194335938
1997	60.2610816955566
1998	63.4854583740234
1999	64.1897430419922
2000	64.3621215820312
2001	64.9259719848633
2002	65.6905822753906
2003	66.7536087036133
2004	67.4801406860352
2005	67.1387329101562
2006	67.4235229492188
2007	67.7421188354492
2008	68.3801116943359
2009	69.1890182495117
2010	70.9337463378906
2011	71.0120620727539
2012	71.8498916625977
2013	72.4125137329102
2014	73.2375564575195
2015	74.0270309448242
2016	74.7081527709961
2017	75.3724594116211
2018	75.9494705200195
2019	76.1585693359375
2020	76.6968078613281
2021	77.2592315673828
2022	77.7956314086914