Year % of total working-age population with basic education 2002 65.16901759106662 2003 64.54095236143583 2004 64.26617697864087 2005 63.44161248145123 2006 64.0602050662356 2007 63.946562124364895 2008 62.63800223491561 2009 62.16969608735933 2011 61.246527390447525 2012 64.57839578234339 2013 63.972994122425305 2014 63.67835857574474 2015 62.72248346973186 2016 56.377119196179336 2017 55.77265909404646 2018 55.44456944916019 2019 55.24165669682602 2020 48.96333018680465 2021 52.9433046273707 2022 52.952447466584296 2023 51.44917243036158