Year % of GDP 2000 4.11237431 2001 3.88486743 2002 4.02669907 2003 3.90227985 2004 3.72798967 2005 3.77274442 2006 3.73662806 2007 3.70858574 2008 3.65843678 2009 3.49997187 2010 3.57742167 2011 3.85282946 2012 3.9310236 2013 3.63111043 2014 3.78765464 2015 3.59505081 2016 3.5937767 2017 3.39752436 2018 3.61970162 2019 3.65157914 2020 3.77177453 2021 3.82407379