Year Percent of GDP 2000-01-01 65.9352 2001-01-01 54.7068 2002-01-01 54.1509 2003-01-01 55.1277 2004-01-01 54.1011 2005-01-01 52.4220 2006-01-01 47.9520 2007-01-01 44.8002 2008-01-01 42.0210 2009-01-01 40.5428 2010-01-01 39.2171 2011-01-01 43.0680 2012-01-01 47.6764 2013-01-01 46.8404 2014-01-01 51.5606 2015-01-01 54.8493 2016-01-01 61.2129 2017-01-01 71.2748 2018-01-01 73.1041 2019-01-01 73.3145