Year	% of total working-age population with basic education
1991	57.474
1992	56.788
1993	57.361
1994	59.836
1995	61.024
1999	65.545
2000	66.211
2001	72.63
2002	68.636
2004	79.281
2005	60.568
2006	64.045
2007	63.339
2008	63.633
2009	63.993
2011	66.674
2012	59.246
2013	61.999
2014	65.999
2015	60.833
2016	61.091
2017	62.655
2018	67.708
2019	69.83
2020	63.606
2021	73.314
2022	72.939