Year % of GDP 2000 2.34087849 2001 2.47586274 2002 2.52271342 2003 2.33570814 2004 2.3036108 2005 2.56580162 2006 2.21611428 2007 2.15426159 2008 2.18010473 2009 2.50058532 2010 2.44709301 2011 2.31150389 2012 2.48541355 2013 2.65196824 2014 2.95621157 2015 3.02036071 2016 3.05809808 2017 3.03438616 2018 3.17308927 2019 3.25723219 2020 4.32614946 2021 3.9896729