Year % of GDP 2000 0.5630433737389199 2001 0.5378765221834536 2002 0.5234249517608623 2003 0.559404984654992 2004 0.5633837750385791 2005 0.5890731182252633 2006 0.5878364883935709 2007 0.6245823301660679 2008 0.6714376647805733 2009 0.6970808539570444 2010 0.7374388341634147 2011 0.7118723899520922 2012 0.6837121148714661 2013 0.7096057821742171 2014 0.7389366403111013 2015 0.7646309943089553 2016 0.7257820361440567 2017 0.6545725457040282 2018 0.6468634478789325 2019 0.6547227032093882 2020 0.6176525569718591