Year	% of total working-age population with basic education
2005	40.471
2006	41.296
2007	41.476
2008	42.314
2009	41.075
2010	39.488
2011	39.99
2012	37.969
2013	38.562
2014	39.785
2015	37.988
2016	34.913
2017	33.45
2018	33.315
2019	33.608
2020	31.663
2021	29.848
2022	28.157