Year Percent of GDP 2004-01-01 115.4457 2005-01-01 124.7668 2006-01-01 143.8862 2007-01-01 158.2698 2008-01-01 182.4085 2009-01-01 169.7359 2010-01-01 160.1882 2011-01-01 133.7611 2012-01-01 116.2679 2013-01-01 105.3507 2014-01-01 97.5611 2015-01-01 90.7662 2016-01-01 87.3198 2017-01-01 94.5980