Year Percent of GDP 2004-01-01 51.7462618750902 2005-01-01 39.1617855400160 2006-01-01 29.9430080177506 2007-01-01 35.7031589291727 2008-01-01 54.2192948994165 2009-01-01 38.9260982033832 2010-01-01 55.8944340285624 2011-01-01 44.6464885048107 2012-01-01 35.5960848655234 2013-01-01 28.2420046996696 2014-01-01 25.1602688801538 2015-01-01 32.2681833930587 2016-01-01 27.5311723148555 2017-01-01 26.8818090930151 2018-01-01 29.1872415782724 2019-01-01 32.4169770748574