Year Percent of GDP 2004-01-01 16.15963025386890 2005-01-01 14.58710317801580 2006-01-01 17.71038132306420 2007-01-01 12.83459939178530 2008-01-01 13.90795743435280 2009-01-01 17.53373363337660 2010-01-01 14.55359425847630 2011-01-01 23.25118843121610 2012-01-01 11.44696929063980 2013-01-01 9.57687539810081 2014-01-01 10.96633798710120 2015-01-01 9.56363110966242 2016-01-01 8.43027976346465 2017-01-01 7.44798326758264 2018-01-01 5.51086386379843 2019-01-01 5.67645556475376