Year Percent of GDP 2004-01-01 23.3614863370946 2005-01-01 21.7094484381440 2006-01-01 25.5732041100193 2007-01-01 25.9851652162328 2008-01-01 25.3459933721249 2009-01-01 23.7657494618791 2010-01-01 27.1050828524762 2011-01-01 23.9463839079139 2012-01-01 24.3805683257093 2013-01-01 22.0321323748580 2014-01-01 19.6757145553509 2015-01-01 18.0910627895573 2016-01-01 17.9009349878670 2017-01-01 16.9173529443761 2018-01-01 15.8356581096843 2019-01-01 14.8761467672015