Year % of GDP 2000 3.343364 2001 3.16302657 2002 3.358464 2003 3.60699272 2004 3.15019798 2005 3.03367925 2006 2.9347465 2007 2.83749056 2008 3.19488454 2009 3.39853096 2010 3.20265388 2011 3.15792179 2012 3.32783675 2013 3.68562651 2014 3.87155652 2015 4.18069839 2016 4.38810682 2017 4.36493397 2018 4.07545424 2019 4.39938164 2020 5.71281767 2021 5.56525183