Year % of GDP 2002 31.528602813400457 2003 30.6171290559844 2004 32.9551337944103 2005 23.65369325627463 2006 14.892658924155647 2007 21.68483098361377 2008 15.56180569296589 2009 27.546670518249766 2010 38.91986117486918 2011 40.38052123313456 2012 38.83375587864947 2013 39.33499483336471 2014 32.705740834589875 2015 23.34245233800827 2016 26.52342091898297 2017 30.765213310125933 2018 33.02082200040763 2019 33.716221389491196 2020 14.341550462366385 2021 8.662335679810537 2022 11.37302349415151