Year	% of total working-age population with basic education
1998	26.284
1999	25.282
2000	23.793
2001	21.796
2002	20.787
2003	23.508
2004	19.903
2005	17.759
2006	17.888
2007	18.104
2008	15.009
2009	15.612
2010	14.232
2011	14.078
2012	14.101
2013	14.779
2014	16.603
2015	16.496
2016	15.6
2017	16.488
2018	17.773
2019	18.641
2020	19.427
2021	21.01
2022	21.67
2023	23.89