Year % of total labor force with advanced education 1992 1.541 1993 1.313 1994 2.638 1995 1.283 1996 1.029 1997 1.149 1999 1.12 2000 1.195 2001 1.422 2002 1.72 2003 4.289 2004 3.913 2005 3.506 2006 2.844 2007 3.153 2008 2.412 2009 4.381 2010 3.902 2011 3.933 2012 3.47 2013 4.094 2014 3.975 2015 4.754 2016 3.418 2017 3.817 2018 4.265 2019 4.026 2020 4.763 2021 4.019 2022 3.695 2023 3.9