Year % of total labor force with advanced education 1995 7.34 1996 6.811 1997 5.994 1998 6.361 1999 4.841 2000 5.211 2001 4.28 2002 4.043 2003 4.168 2004 4.875 2005 4.542 2006 3.456 2007 3.372 2008 3.45 2009 4.141 2010 4.592 2011 3.859 2012 4.005 2013 4.402 2014 5.016 2015 6.395 2016 5.804 2017 5.637 2018 4.345 2019 4.021 2020 4.515 2021 4.598 2022 3.915 2023 3.978