Year	% of total working-age population with basic education
1998	47.284
1999	48.415
2000	20.473
2001	20.082
2002	19.094
2003	19.456
2004	19.735
2005	19.677
2006	19.245
2007	18.348
2008	18.106
2009	16.768
2010	17.49
2011	17.61
2012	18.235
2013	18.802
2014	20.314
2015	20.435
2016	20.276
2017	21.638
2018	21.256
2019	21.371
2020	18.269
2021	16.306
2022	18.53
2023	18.641