Year	% of total working-age population with basic education
1992	44.972
1993	44.031
1994	42.626
1995	41.797
1996	41.363
1997	41.105
1998	43.949
1999	43.69
2000	42.84
2001	41.332
2002	41.776
2003	41.936
2004	42.049
2005	40.983
2006	42.619
2007	42.104
2008	41.969
2009	40.848
2010	40.329
2011	40.275
2012	41.409
2013	41.065
2014	40.975
2015	40.887
2016	41.685
2017	42.165
2018	42.147
2019	41.934
2020	40.212
2021	40.068
2022	40.616
2023	32.597