Year % of GDP 2000 1.71051323 2001 1.70341122 2002 1.67955506 2003 1.15990651 2004 1.14767253 2005 1.39308929 2006 1.40171933 2007 1.68479145 2008 2.12083244 2009 2.3301568 2010 2.51638484 2011 2.72521138 2012 2.76371336 2013 2.77817011 2014 2.46088839 2015 2.36797523 2016 2.66466546 2017 2.68220282 2018 2.52541804 2019 2.59220481 2020 3.24332738 2021 3.28691697