Year Percent of GDP 2004-01-01 83.7445725273639 2005-01-01 85.3385786111955 2006-01-01 77.7269195501384 2007-01-01 64.9809576274891 2008-01-01 57.4222023091781 2009-01-01 65.1745889328225 2010-01-01 72.4295025265568 2011-01-01 78.8142322387042 2012-01-01 91.1113284573993 2013-01-01 102.4898773671920 2014-01-01 115.9235156726100 2015-01-01 126.0328435901120 2016-01-01 129.4896260492450 2017-01-01 127.0921546767040 2018-01-01 130.0302374887700 2019-01-01 130.6472383246260