Year Percent of GDP 2004-01-01 3.6948 2005-01-01 5.2140 2006-01-01 4.9271 2007-01-01 6.3579 2008-01-01 6.4396 2009-01-01 7.2574 2010-01-01 7.5240 2011-01-01 8.1237 2012-01-01 7.8654 2013-01-01 11.4754