Year	% of total working-age population with basic education
1996	77.341
1997	72.622
1999	78.315
2000	79.449
2001	84.905
2003	80.868
2007	80.03
2008	79.021
2009	81.266
2010	83.696
2011	85.886
2012	81.442
2013	79.733
2014	79.872
2015	79.481
2016	81.645
2017	79.945
2019	80.196
2020	81.886
2021	79.457