Year % of total labor force with advanced education 1997 2.15 1998 8.381 1999 8.743 2000 9.294 2001 7.291 2002 6.673 2003 6.449 2004 6.561 2005 3.985 2006 2.727 2007 2.083 2008 2.933 2009 6.055 2010 7.702 2011 6.21 2012 5.641 2013 5.11 2014 4.198 2015 3.676 2016 2.906 2017 2.903 2018 2.803 2019 2.904 2020 4.087 2021 4.044 2022 3.514 2023 3.793