Year Percent of GDP 2004-01-01 16.6778 2005-01-01 16.6838 2006-01-01 16.3383 2007-01-01 14.7650 2008-01-01 14.1835 2009-01-01 11.8962 2010-01-01 12.2192 2011-01-01 12.3909 2012-01-01 13.2670