Year % of GDP 2000 76.07454233409611 2001 76.53358719646799 2002 79.04236245954692 2003 72.24038770053475 2004 65.04740245261983 2005 66.0327291886196 2006 63.818025022341374 2007 65.5981500364166 2008 65.17456546929317 2009 58.03574660633484 2010 44.80003003003003 2011 44.30050041701418 2012 46.71272962522755 2013 39.52996194980729 2014 36.49908297609289 2015 34.40375445794469 2016 35.91871351024459 2017 35.94261591857312 2018 35.496699909675094 2019 36.43715132245741 2020 39.292284575808154 2021 36.91949096123188 2022 36.2030463526172 2023 34.934450600184675