Year Percent of GDP 2000-01-01 38.8924 2001-01-01 23.8683 2002-01-01 11.1828 2003-01-01 19.6949 2004-01-01 26.2378 2005-01-01 37.2108 2006-01-01 44.6156 2007-01-01 36.7889 2008-01-01 40.8710 2009-01-01 26.6893 2010-01-01 31.8142 2011-01-01 42.9423 2012-01-01 45.4617 2013-01-01 40.3067 2014-01-01 33.4449 2015-01-01 3.5040 2016-01-01 -4.5072 2017-01-01 1.9735 2018-01-01 5.7944 2019-01-01 3.5750