Year	% of total working-age population with basic education
2002	32.138
2003	32.194
2004	33.495
2005	31.392
2006	30.437
2007	33.036
2008	33.884
2009	34.542
2010	34.465
2011	33.938
2012	30.484
2013	29.47
2014	29.051
2015	29.617
2016	27.279
2017	24.588
2018	23.172
2019	23.333
2020	21.977
2021	24.037
2022	22.776
2023	15.495