Year Percent of GDP 2004-01-01 44.3214783791713 2005-01-01 42.5986387989154 2006-01-01 17.6872236219657 2007-01-01 17.5294615568633 2008-01-01 17.1876415457345 2009-01-01 20.8902434165459 2010-01-01 21.3614995084821 2011-01-01 19.0157539003599 2012-01-01 22.1989920585814 2013-01-01 22.1860456327334 2014-01-01 19.5591045359187 2015-01-01 22.1967442864732 2016-01-01 23.7868533402714 2017-01-01 25.6249326043305 2018-01-01 24.1253742886972 2019-01-01 24.0703598078380