Year Percent of GDP 2004-01-01 0.136073142201329 2005-01-01 0.132944552852279 2006-01-01 0.134011725986362 2007-01-01 0.144531374310278 2008-01-01 0.137161255522449 2009-01-01 0.138858480695676 2010-01-01 0.140012103119879 2011-01-01 0.136844916989196 2012-01-01 0.139389862871029 2013-01-01 0.144507476661251 2014-01-01 0.170379753807176 2015-01-01 0.190703054002699