Year Percent of GDP 2000-01-01 52.5430 2001-01-01 59.0871 2002-01-01 47.5923 2003-01-01 39.0878 2004-01-01 29.0349 2005-01-01 19.1711 2006-01-01 13.4308 2007-01-01 8.9275 2008-01-01 11.0957 2009-01-01 32.4475 2010-01-01 29.1085 2011-01-01 33.4739 2012-01-01 32.1184 2013-01-01 30.8832 2014-01-01 24.9120 2015-01-01 34.9204 2016-01-01 46.4811 2017-01-01 53.9621 2018-01-01 55.3554 2019-01-01 51.9566