Year	% of total working-age population with basic education
2002	61.907
2003	62.263
2004	60.38
2005	59.725
2007	58.997
2008	59.122
2009	62.248
2010	62.514
2011	62.504
2012	62.996
2013	61.498
2014	60.942
2015	60.592
2016	59.528
2017	59.178
2018	57.874
2019	56.539
2021	55.284
2022	51.558
2023	51.771