Year % of total working-age population with basic education 2010 32.584366308660044 2011 33.03105407999766 2012 33.302429099913425 2013 32.951621347002884 2014 31.01594418495318 2015 31.631719412473785 2016 30.8436256134085 2017 29.011507326412218 2018 30.69380086034607 2019 30.025818747452945 2020 27.331492730495093 2021 29.246789477251337 2022 29.02338011706342