Year % of total labor force with advanced education 2002 3.83 2004 3.09 2005 3.01 2006 2.61 2007 2.56 2008 2.33 2009 3.84 2010 3.164 2011 2.386 2012 2.67 2013 2.694 2014 2.502 2015 2.905 2016 2.879 2017 2.511 2018 2.356 2019 2.631 2020 4.464 2021 4.048 2022 3.309 2023 2.723