Year Percent of GDP 2004-01-01 22.4076791294362 2005-01-01 19.8926259334711 2006-01-01 20.8654154456211 2007-01-01 23.3639553155540 2008-01-01 26.2480688652894 2009-01-01 27.8978225412734 2010-01-01 26.8062525940466 2011-01-01 25.1555407573438 2012-01-01 31.3976754507589 2013-01-01 30.1564130099915 2014-01-01 30.7034848841612 2015-01-01 28.6536450174865 2016-01-01 27.9387693551580 2017-01-01 24.0275171136460 2018-01-01 25.0155999349563 2019-01-01 30.8689483295400