Year % of total working-age population with basic education 2005 58.79377996852637 2010 56.3792332877065 2012 55.53831585953472 2018 51.93514972403146 2019 53.284104374461805 2020 51.65810107403558 2021 53.20718529867738 2022 53.455278470643236