Year % of total working-age population with basic education 2005 59.076 2006 56.843 2007 55.987 2008 57.444 2009 58.393 2010 59.352 2011 57.202 2012 55.988 2013 61.037 2014 63.19 2015 61.493 2016 62.172 2017 63.536 2018 65.764 2019 63.866 2021 66.535 2022 65.98 2023 56.679