Year % of GDP 2000 4.9928133873823635 2001 5.026846107497147 2002 4.587765465862155 2003 5.496240898935498 2004 5.479950376263113 2005 5.29295540647081 2006 5.201992900042586 2007 5.100515469032262 2008 4.892347807891994 2009 5.288366762149957 2010 5.21274266284679 2011 5.155175215793499 2012 4.985745755814778 2013 4.966205145242217 2014 4.750288109495713 2015 4.9744453657851215 2016 5.042054886227749 2017 5.044917168152352 2018 4.774716775940383 2019 4.734024950894296 2020 4.935148986144652 2021 5.103503708550773