Year % of GDP 2001 42.50730064472481 2002 45.70217359035267 2003 47.134005622217735 2004 46.89039727042576 2005 55.189851923204834 2006 58.59408589911165 2007 54.21165909198235 2008 62.62907875065664 2009 48.69272285597433 2010 60.15033513587134 2011 63.783176003459495 2012 62.90468636214419 2013 60.27908260874809 2014 59.71210939958996 2015 57.11831279988092 2016 56.41234531291578 2017 55.33647890570405 2018 53.20403449534004 2019 53.553391051922915 2020 50.90863539240994 2021 49.73553568750578 2022 50.38257565174209