Year % of GDP 2000 3.78593802 2001 3.75857329 2002 3.63683939 2003 4.14589357 2004 3.81282496 2005 3.62017798 2006 3.44340944 2007 3.04300809 2008 2.40282655 2009 2.3870523 2010 3.1060183 2011 3.01365519 2012 4.02018118 2013 3.20524502 2014 3.18385339 2015 3.15717173 2016 3.43058586 2017 3.48172712 2018 3.6267302 2019 3.49421597 2020 5.11240625 2021 4.02404499