Year % of total labor force with advanced education 1992 2.952 1993 3.872 1994 4.62 1995 3.943 1996 4.256 1997 3.773 1998 3.866 1999 3.726 2000 2.664 2001 3.116 2002 3.477 2003 3.814 2004 3.664 2005 4.41 2006 4.519 2007 3.8 2008 3.642 2009 4.51 2010 4.477 2011 3.761 2012 3.943 2013 4.921 2014 4.671 2015 4.592 2016 4.204 2017 3.728 2018 3.162 2019 2.83 2020 3.25 2021 3.309 2022 3.025 2023 2.948