Year % of GDP 2000 4.55400705 2001 4.6971879 2002 4.94717073 2003 5.11781693 2004 4.47935343 2005 4.10970592 2006 3.77771473 2007 3.72242856 2008 3.39762759 2009 3.5464704 2010 3.2764473 2011 2.52865291 2012 3.04719615