Year % of GDP 2000 4.17 2001 4.22 2002 4.47 2003 4.6 2004 3.45 2005 3.43 2006 3.65 2007 3.79 2008 4.45 2009 5.29 2010 4.84 2011 4.56 2012 4.18 2013 4.02 2014 4.12 2015 4.29 2016 4.36 2017 4.22 2018 4.31 2019 4.55 2020 5.14 2021 5.26