Year	% of total working-age population with basic education
2007	33.592
2008	38.429
2009	37.738
2010	39.61
2011	40.398
2012	39.294
2013	38.065
2014	33.759
2015	42.327
2016	38.767
2017	34.545
2018	43.822
2019	42.993
2020	34.041
2021	30.034
2022	35.385