Year % of GDP 2006 56.621461888716475 2007 68.68192620112494 2008 70.19065480729752 2009 66.57567020163832 2010 65.29411048396754 2011 63.95705348927018 2012 65.3748302602651 2013 64.85738238482642 2014 64.45919464133209 2015 61.82763320376641 2016 60.648243522502895 2017 60.861502031813494 2018 60.08922053366693 2019 60.475388057285315 2020 61.20331319279033 2021 56.549104429788436 2022 51.245989241271715 2023 51.32934211287059