Year % of GDP 2000 3.22929931 2001 3.45263052 2002 3.04984355 2003 2.93956637 2004 2.96955347 2005 2.89969206 2006 3.55163956 2007 3.51309872 2008 3.07543588 2009 2.67676353 2010 2.99847841 2011 3.57470489 2012 3.04691243 2013 3.12071991 2014 3.57177019 2015 3.37505221 2016 3.72492766 2017 3.67690349 2018 3.77145958 2019 4.28537226 2020 3.36644053 2021 2.90336895