Year	% of people ages 15 and above
1974	43.9997215270996
1975	44.4871711730957
1976	45.0156517028809
1977	45.558521270752
1978	46.2168388366699
1979	46.8881683349609
1980	47.6552886962891
1981	48.4222602844238
1982	49.2459602355957
1983	50.0341796875
1984	50.9099388122559
1985	51.938060760498
1986	52.8937797546387
1987	53.7257194519043
1988	54.8400688171387
1989	55.8455085754395
1990	58.235710144043
1991	59.5187606811523
1992	60.4993591308594
1993	61.3924407958984
1994	62.1976699829102
1995	63.8145713806152
1996	65.1247100830078
1997	66.0406265258789
1998	67.2555770874023
1999	68.3557662963867
2000	69.2367401123047
2001	70.5083999633789
2002	71.0265197753906
2003	74.0911712646484
2004	74.7003021240234
2005	74.4650192260742
2006	74.544189453125
2007	75.2320175170898
2008	75.8424224853516
2009	75.8617706298828
2010	76.6665496826172
2011	77.356689453125
2012	79.8540573120117
2013	77.862907409668
2014	81.5690612792969
2015	79.558479309082
2016	80.5925903320312
2017	81.5119323730469
2018	79.0097885131836
2019	79.3410034179688
2020	79.7623291015625
2021	80.0122528076172
2022	80.3575897216797