Year Percent of GDP 2004-01-01 76.0381 2005-01-01 67.9279 2006-01-01 70.2756 2007-01-01 72.2315 2008-01-01 73.0550 2009-01-01 69.0354 2010-01-01 79.7593 2011-01-01 85.3944 2012-01-01 87.5955 2013-01-01 93.5748 2014-01-01 99.2040 2015-01-01 102.0388 2016-01-01 107.3691 2017-01-01 113.9625