Year % of total labor force with advanced education 1990 7.965 1991 8.308 1992 8.751 1993 9.776 1994 12.266 1996 11.823 1997 10.386 1998 10.987 1999 12.688 2000 10.381 2001 12.93 2002 10.062 2003 13.561 2004 14.368 2005 11.326 2006 9.833 2007 13.25 2008 12.353 2009 8.981 2010 9.878 2011 8.304 2012 5.529 2013 5.209 2014 4.956 2015 5.444 2016 4.947 2017 4.209 2018 5.31 2019 4.377 2020 4.597 2021 4.43 2022 4.097