Year Percent of GDP 2000-01-01 45.8727 2001-01-01 45.9154 2002-01-01 45.6883 2003-01-01 38.7761 2004-01-01 32.8635 2005-01-01 29.8907 2006-01-01 27.1275 2007-01-01 26.4648 2008-01-01 27.0180 2009-01-01 31.1726 2010-01-01 34.7513 2011-01-01 31.0720 2012-01-01 29.1815 2013-01-01 26.3384 2014-01-01 26.7609 2015-01-01 24.0550 2016-01-01 26.1955 2017-01-01 27.2969 2018-01-01 28.4920 2019-01-01 30.2317