Year % of GDP 2001 38.104307683295104 2002 39.41105460506486 2003 42.71064746806799 2004 47.63511493983612 2005 52.304121545009444 2006 53.89655037064996 2007 53.87503342398634 2008 56.89154027478315 2009 46.3393180337228 2010 48.71959858922219 2011 53.02447838207654 2012 54.55094842558399 2013 52.743791077963266 2014 48.947151275512674 2015 40.99581075149948 2016 38.14658351850199 2017 42.5229543645415 2018 45.01384340762964 2019 43.09141731750958 2020 35.780121571652536