Year % of male working-age population with basic education 2000 35.515 2001 34.511 2002 33.82 2003 32.618 2004 32.812 2005 31.419 2006 30.455 2007 29.65 2008 30.83 2009 32.208 2010 31.899 2011 30.692 2012 30.211 2013 31.873 2014 34.402 2015 33.659 2016 32.667 2017 35.916 2018 36.147 2019 39.035 2020 38.204 2021 35.739 2022 37.388 2023 36.147