Year % of GDP 1998 24.65293388803844 1999 28.190663456159086 2000 27.37640893630599 2001 35.370552538118034 2002 62.44694538426195 2003 57.91122340908211 2004 56.5005963032977 2005 56.215811675057836 2006 50.51222227152812 2007 48.4823724778462 2008 48.42693761956625 2009 58.14692056753867 2010 57.49428661876244 2011 54.56257098164148 2012 54.85233981422556 2013 62.39927679373706 2014 50.837954434400736 2015 51.278403267864824 2016 52.065656169395524 2017 55.248518820306025 2018 52.214282008466284 2019 53.87903935621778 2020 70.38427940238809 2021 66.46905258866637