Year Percent of GDP 1995-01-01 3.27087326046709 1996-01-01 3.32632780343197 1997-01-01 3.70442936079800 1998-01-01 3.75232838218517 1999-01-01 3.92953034270056 2000-01-01 4.86268552179543 2001-01-01 4.62025218942451 2002-01-01 4.33186934135076 2003-01-01 4.22089966199275 2004-01-01 4.41042216255781 2005-01-01 4.85994997649704 2006-01-01 5.31165231857969 2007-01-01 5.35851349519901 2008-01-01 5.61712875315723 2009-01-01 4.56982468674807 2010-01-01 5.42253969502526 2011-01-01 6.00488747361503 2012-01-01 6.09029329481330 2013-01-01 5.85429292204292 2014-01-01 5.75661320559884 2015-01-01 5.70128510855147 2016-01-01 5.48446498238572 2017-01-01 5.84198682333042