Year Percent of GDP 2000-01-01 15.5277 2001-01-01 36.3192 2002-01-01 40.2318 2003-01-01 21.1019 2004-01-01 23.8662 2005-01-01 23.5673 2006-01-01 24.3667 2007-01-01 26.4631 2008-01-01 47.1416 2009-01-01 38.7238 2010-01-01 44.1476 2011-01-01 43.1656 2012-01-01 40.0542 2013-01-01 38.7694 2014-01-01 38.3472 2015-01-01 32.9524 2016-01-01 33.2967 2017-01-01 36.0388 2018-01-01 37.9904 2019-01-01 38.9678