Year Percent of GDP 2004-01-01 20.3357280265340 2005-01-01 22.6762364404160 2006-01-01 21.6768327833813 2007-01-01 23.8439379378771 2008-01-01 23.9374091560648 2009-01-01 23.5396140006542 2010-01-01 25.2765399465399 2011-01-01 26.1830625954996 2012-01-01 25.7086782376502 2013-01-01 26.8334918537963 2014-01-01 28.2662897564512 2015-01-01 27.4026732711548 2016-01-01 25.7872591057986 2017-01-01 25.4123183307523 2018-01-01 25.3631554896105 2019-01-01 24.1031115858742