Year % of GDP 2000 1.56699646 2001 1.74266553 2002 1.96599579 2003 1.90437138 2004 1.85756683 2005 2.14629865 2006 1.86406863 2007 1.91819596 2008 1.74781442 2009 2.61162758 2010 2.44673586 2011 2.35490894 2012 2.26107645 2013 2.4740355 2014 2.44891143 2015 2.90855265 2016 3.26260972 2017 3.44048762 2018 3.16401339 2019 3.14093018 2020 3.43429112 2021 3.3227787