Year	% of total working-age population with basic education
1992	38.742
1993	39.007
1994	38.187
1995	37.329
1996	36.361
1997	36.339
1999	43.774
2000	43.455
2001	37.302
2002	36.864
2003	36.631
2004	35.391
2005	37.715
2006	38.549
2007	38.14
2008	37.916
2009	38.381
2010	37.234
2011	41.541
2012	40.991
2013	41.49
2014	37.585
2015	38.039
2016	38.614
2017	39.606
2018	39.9
2019	40.901
2020	41.41
2021	42.492
2022	45.097
2023	45.873