Year % of GDP 2000 4.41 2001 4.28 2002 4.59 2003 5.82 2004 6.2 2005 7.45 2006 8.31 2007 6.93 2008 6.53 2009 6.9 2010 6.95 2011 7.11 2012 8.51 2013 8.19 2014 7.36 2015 7.15 2016 6.41 2017 6.19 2018 5.01 2019 4.49 2020 5.26 2021 5.44