Year % of GDP 2000 4.64 2001 4.7 2002 4.84 2003 4.74 2004 5.02 2005 4.95 2006 4.77 2007 4.93 2008 5.2 2009 5.69 2010 5.44 2011 5.26 2012 5.36 2013 5.5 2014 5.46 2015 5.32 2016 5.67 2017 5.34 2018 5.28 2019 5.45 2020 5.72 2021 6.18