Year % of GDP 2000 3.10125351 2001 3.02623773 2002 3.334723 2003 3.24312782 2004 3.13893151 2005 3.15972233 2006 3.09970832 2007 3.19277525 2008 3.45933938 2009 3.61939645 2010 3.39009809 2011 3.56825495 2012 3.5229404 2013 3.45313334 2014 3.68448091 2015 3.8522861 2016 3.93900609 2017 3.85276842 2018 3.87040329 2019 3.78911877 2020 4.35728741 2021 5.16038752