Year	% of male working-age population with basic education
1997	82.783
1998	80.196
1999	77.915
2000	80.238
2001	80.025
2002	91.844
2003	85.67
2004	83.893
2005	81.859
2006	84.221
2007	85.182
2008	84.475
2009	85.022
2010	85.372
2011	85.123
2012	83.746
2013	83.953
2014	83.262
2015	82.484
2016	82.48
2017	82.291
2018	82.349
2019	81.909
2020	74.387
2021	78.469
2022	76.249
2023	74.615