Year % of GDP 1990 7.116940705172858 1991 4.748384389611942 1992 2.790194240130719 1993 2.9929628658888463 1994 3.800182911103388 1995 2.5126957346846464 1996 1.8600726345433878 1997 1.877737340641329 1998 2.827564980140205 1999 2.763803118057279 2000 4.361207843902908 2001 0.38307701200202116 2002 1.300372979012165 2003 0.6369010863361273 2004 0.8542613905808729 2005 1.2332823366343915 2006 1.9300012861607523 2007 2.9779121968202458 2008 4.872006829770926 2009 4.131164983839531 2010 6.084943327372939 2011 8.184734657697563 2012 11.747254371308275 2013 11.444403390031415 2014 12.92964361253413 2015 7.366289930978508 2016 6.598332667037534 2017 11.331318414741872 2018 13.38101427416309 2019 13.800571754293909 2020 14.7527271937813 2021 14.273793577247758 2022 15.392881593074629 2023 14.110795140158084