Year Percent of GDP 2005-01-01 6.3871 2006-01-01 7.0890 2007-01-01 6.9155 2008-01-01 6.0354 2009-01-01 7.6502 2010-01-01 6.9405 2011-01-01 6.0111 2012-01-01 6.2441 2013-01-01 8.3066