Year	% of total working-age population with basic education
1997	58.015
2003	58.604
2006	56.134
2007	56.197
2008	59.319
2009	57.8
2010	56.973
2011	54.311
2012	55.914
2013	56.312
2014	56.359
2015	55.409
2016	55.816
2017	54.916
2018	56.674
2019	58.127
2020	53.016
2021	50.786
2022	56.851
2023	52.754