Year Percent of GDP 2004-01-01 37.5923542792766 2005-01-01 36.0703926161873 2006-01-01 17.2500489305493 2007-01-01 18.5509820427737 2008-01-01 18.8892330035741 2009-01-01 26.8500860513418 2010-01-01 28.3059451806091 2011-01-01 32.7151737539228 2012-01-01 34.1723090555809 2013-01-01 36.7693101621635 2014-01-01 42.3657088233101 2015-01-01 44.5087257159671 2016-01-01 47.8086556899750 2017-01-01 48.3330614994226 2018-01-01 50.3991005135931 2019-01-01 47.5316852876038