Year Percent of GDP 2004-01-01 79.6575703366501 2005-01-01 57.3980756000000 2006-01-01 15.2219321725129 2007-01-01 14.8979058317400 2008-01-01 13.6886489841986 2009-01-01 13.6918272934249 2010-01-01 13.4618099186657 2011-01-01 15.1686381624584 2012-01-01 14.5202196539325 2013-01-01 20.4084197788522 2014-01-01 22.8385267171915 2015-01-01 26.8504406594590 2016-01-01 33.5581030432874 2017-01-01 36.8817823809951 2018-01-01 38.3645686211834 2019-01-01 38.9293910608515