Year Percent of GDP 1999-01-01 46.4034651473868 2000-01-01 50.0140597668874 2001-01-01 49.2121492911118 2002-01-01 46.4918506139911 2003-01-01 43.9997028557360 2004-01-01 47.1900391361245 2005-01-01 52.7371999423806 2006-01-01 58.6459499217213 2007-01-01 62.8631318256081 2008-01-01 60.9394945226953 2009-01-01 51.6222031581655 2010-01-01 60.3802996209267 2011-01-01 67.4052770545912 2012-01-01 69.7094408321386 2013-01-01 71.0775749984118 2014-01-01 72.1658497292502 2015-01-01 73.9035992701099 2016-01-01 73.7848992328226 2017-01-01 79.2435640025522