Year % of GDP 2000 3.31908512 2001 3.92571616 2002 4.73818302 2003 3.97301245 2004 3.38328195 2005 2.51707149 2006 2.29996443 2007 2.41929626 2008 2.24441886 2009 3.5828805 2010 3.28064442 2011 4.01902008