Year % of GDP 2000 5.28 2001 5.71 2002 5.62 2003 5.77 2004 5.74 2005 6.07 2006 5.57 2007 5.69 2008 5.29 2009 5.39 2010 5.66 2011 4.87 2012 5.25 2013 5.7 2014 5.39 2015 6.07 2016 5.91 2017 5.76 2018 5.53 2019 5.86 2020 6.41 2021 6.57