Year Percent of GDP 2000-01-01 36.3173 2001-01-01 33.0333 2002-01-01 29.9569 2003-01-01 34.3145 2004-01-01 40.8119 2005-01-01 46.1377 2006-01-01 48.0919 2007-01-01 41.2365 2008-01-01 56.4816 2009-01-01 31.6823 2010-01-01 37.5023 2011-01-01 44.3968 2012-01-01 45.1460 2013-01-01 41.1656 2014-01-01 36.6723 2015-01-01 24.9721 2016-01-01 21.4781 2017-01-01 24.4116 2018-01-01 29.1228 2019-01-01 29.9351