Year Percent of GDP 2004-01-01 11.9247928454270 2005-01-01 11.4935761988384 2006-01-01 10.4698360445491 2007-01-01 15.7860474935125 2008-01-01 21.4212320983458 2009-01-01 23.5564894662387 2010-01-01 24.6490951618929 2011-01-01 29.3542922026094 2012-01-01 30.2433620375470 2013-01-01 33.0453216282239 2014-01-01 32.3216938611863 2015-01-01 36.2080084897265 2016-01-01 35.4785845876880 2017-01-01 34.6744228175195 2018-01-01 34.5207892841168 2019-01-01 34.6776057218026