Year Percent of GDP 2000-01-01 58.1749 2001-01-01 58.1068 2002-01-01 63.7340 2003-01-01 66.3242 2004-01-01 65.3495 2005-01-01 60.3608 2006-01-01 59.2571 2007-01-01 56.6847 2008-01-01 59.3089 2009-01-01 59.5356 2010-01-01 51.9203 2011-01-01 45.1764 2012-01-01 43.3021 2013-01-01 42.7184 2014-01-01 38.8111 2015-01-01 33.7173 2016-01-01 31.6636 2017-01-01 30.6490 2018-01-01 30.4398 2019-01-01 29.3277