Year	% of total working-age population with basic education
1970	60.376
1980	60.96
1991	60.076
2000	59.499
2011	65.24
2012	66.95
2013	68.96
2014	68.99
2015	68.95
2016	69.09
2017	68.59
2018	68.3
2019	67.85
2020	64.57
2021	63.5
2022	63.15