Year % of total working-age population with advanced education 1998 87.39 2000 89.711 2003 87.947 2006 86.186 2009 83.601 2010 84.868 2011 85.542 2012 86.482 2013 85.903 2014 84.281 2015 85.09 2016 84.498 2017 84.624 2018 85.052 2019 85.481 2020 81.052 2021 83.542 2022 85.122 2023 85.874