Year	% of total working-age population with basic education
2003	56.986
2006	54.44
2008	54.57
2009	53.891
2010	54.362
2011	53.252
2012	58.147
2013	52.893
2014	49.893
2015	49.245
2016	48.842
2017	48.953
2018	48.717
2019	51.798
2020	49.884
2021	49.164
2022	49.936