Year Percent of GDP 2004-01-01 27.6960834028855 2005-01-01 25.2553752403658 2006-01-01 28.6795433868784 2007-01-01 28.4070495274236 2008-01-01 27.2325239179078 2009-01-01 34.6222367580567 2010-01-01 29.4992525435509 2011-01-01 23.6847488950196 2012-01-01 36.1664562703617 2013-01-01 43.6907321439612 2014-01-01 41.3312513841845 2015-01-01 38.9195246319660 2016-01-01 34.4302403297814 2017-01-01 34.2085509108325 2018-01-01 33.3077275264609 2019-01-01 33.1752875802629