Year % of GDP 1992 20.543478260869566 1993 26.639593908629443 1994 24.750182656100712 1995 19.887646928000134 1996 18.799774811169783 1997 20.734590954938252 1998 17.112328938804634 1999 16.67247619349756 2000 16.624734502616654 2001 15.75466424428761 2002 14.201038323073803 2003 17.688121909596113 2004 18.371346900891748 2005 20.149656277903887 2006 22.223096622806466 2007 23.7266987288672 2008 25.35338920555232 2009 18.62947062909552 2010 16.321438373620982 2011 14.509072564240263 2012 14.662975033449491 2013 13.354962847879454 2014 12.69776707330694 2015 14.17306451449227 2016 13.788235612381383 2017 13.019030233195899 2018 14.672532984139961 2019 13.301516011912536 2020 12.022907199056911 2021 12.825004964795141 2022 11.23354561982234