Year % of male working-age population with basic education 2009 39.73 2010 40.34 2011 39.05 2012 46.568 2013 46.469 2014 44.805 2015 44.072 2016 42.506 2017 42.148 2018 41.216 2019 39.645 2020 34.858 2021 33.097 2022 37.227