Year % of GDP 2001 34.482202600219395 2002 33.6718097567687 2003 37.561519209502805 2004 36.75069438613841 2005 37.90248384389906 2006 42.10270990657363 2007 50.17667900673083 2008 50.21999076417143 2009 51.85761534613372 2010 49.55499763569061 2011 51.402795673010125 2012 55.32810803872522 2013 56.83848765021827 2014 57.5500981062056 2015 55.82748851011479 2016 62.11082916781856 2017 60.20476483770351 2018 64.72406446088765 2019 66.4826525701289 2020 76.71839435394112 2021 75.56486232008704 2022 77.04701943947406 2023 83.4548814782323