Year Percent of GDP 2004-01-01 42.0933169086167 2005-01-01 29.4464623787950 2006-01-01 14.9353482341523 2007-01-01 15.2135399333060 2008-01-01 15.7981049189902 2009-01-01 21.6378422306355 2010-01-01 20.3113676015813 2011-01-01 18.1233755140797 2012-01-01 16.9171066818339 2013-01-01 21.5574276055399 2014-01-01 23.8040129928063 2015-01-01 31.1394455065829 2016-01-01 44.0098805074589 2017-01-01 34.4922655389186 2018-01-01 42.0674615858926 2019-01-01 44.3157089419840