Year	% of total working-age population with basic education
2004	55.899
2005	54.801
2006	54.22
2008	52.211
2009	51.913
2010	51.244
2011	51.477
2012	50.865
2013	49.782
2014	49.827
2017	48.495
2018	48.458
2019	48.75
2020	44.911
2021	48.107
2022	49.812
2023	50.234