Year % of GDP 2000 2.95726943 2001 3.0067246 2002 3.05441046 2003 3.5898664 2004 3.67036533 2005 3.65047526 2006 3.47215104 2007 3.05636287 2008 3.28902793 2009 3.93795872 2010 4.037848 2011 3.76148415 2012 3.86657739 2013 3.70990849 2014 3.59716344 2015 3.4903245 2016 3.56989384 2017 3.61427999 2018 3.50766349 2019 3.34121513 2020 3.76698613 2021 3.30765009