Year Percent of GDP 2000-01-01 35.0366 2001-01-01 36.5053 2002-01-01 39.4111 2003-01-01 35.4898 2004-01-01 46.5929 2005-01-01 39.5362 2006-01-01 37.1996 2007-01-01 38.6169 2008-01-01 32.9460 2009-01-01 47.7482 2010-01-01 37.3531 2011-01-01 36.0230 2012-01-01 42.2223 2013-01-01 51.0255 2014-01-01 48.6671 2015-01-01 46.8386 2016-01-01 35.2318 2017-01-01 30.7126 2018-01-01 33.1826 2019-01-01 35.7200