Year Percent of GDP 2004-01-01 8.94060461084950 2005-01-01 11.32778243527480 2006-01-01 7.59010510202721 2007-01-01 9.91126282803877 2008-01-01 12.06917562988340 2009-01-01 8.69685523618441 2010-01-01 13.43701891109440 2011-01-01 4.03933495515900 2012-01-01 16.08978573794850 2013-01-01 20.71073360655180 2014-01-01 19.73958769722450 2015-01-01 20.10381426112610 2016-01-01 20.72176383315970 2017-01-01 20.79633499150990 2018-01-01 23.70499582772800 2019-01-01 24.70076035767990