Year % of GDP 2002 35.74766355140187 2003 37.933817594834544 2004 39.421487603305785 2005 40.056550424128176 2006 47.878787878787875 2007 51.1727078891258 2008 53.674121405750796 2009 54.21383647798742 2010 55.319148936170215 2011 61.179698216735254 2012 61.66219839142091 2013 63.47150259067358 2014 63.10096153846154 2015 58.13186813186814 2016 46.422764227642276 2017 41.92307692307693 2018 52.19062259800153 2019 58.17104149026249 2020 75.05827505827506