Year	% of total population ages 15+ (national estimate)
1975	73.31
1980	75.25
1995	75.2
2005	77.5
2008	72.56
2009	72.37
2016	80.57
2017	80.774
2018	81.012
2019	80.2
2020	80.354
2021	76.808
2022	77.379