Year Percent of GDP 2004-01-01 19.3000400569660 2005-01-01 19.8423844944429 2006-01-01 22.5437030343546 2007-01-01 24.4194964569947 2008-01-01 32.2965032527101 2009-01-01 24.6948643569284 2010-01-01 22.8716673448994 2011-01-01 18.7293436713609 2012-01-01 25.5643197579345 2013-01-01 21.2152245225290 2014-01-01 34.4636783533635 2015-01-01 31.4880832847415 2016-01-01 23.3661923995029 2017-01-01 19.9973986814847 2018-01-01 22.2921412826171 2019-01-01 23.0357063913938