Year % of GDP 2001 38.45913613755206 2002 37.515026999082515 2003 40.70554062664158 2004 45.2342444156972 2005 49.82490687534013 2006 51.99422672923516 2007 52.88436330878413 2008 55.887801449346675 2009 62.38714297388215 2010 66.09335106458656 2011 65.23533719734114 2012 69.33806308282084 2013 69.46722895250339 2014 70.43021330149058