Year Percent of GDP 2005-01-01 6.4478 2006-01-01 9.3341 2007-01-01 12.0922 2008-01-01 14.7847 2009-01-01 24.2417 2010-01-01 19.9149 2011-01-01 20.0150 2012-01-01 18.4665