Year % of GDP 2000 1.21474111 2001 0.88201147 2002 1.05214119 2003 1.3372829 2004 1.02267361 2005 1.00069571 2006 0.99547803 2007 0.95031685 2008 1.19189203 2009 1.18541074 2010 1.14910603 2011 1.17214501 2012 1.30787134 2013 1.53696907 2014 1.74364483 2015 1.96816146 2016 2.07750273 2017 2.10680556 2018 2.03803587 2019 2.27491283 2020 3.42298889 2021 3.50580597