Year Percent of GDP 2004-01-01 39.8955007397236 2005-01-01 38.9797101203353 2006-01-01 43.5508910283826 2007-01-01 41.8964540726960 2008-01-01 26.9886341154162 2009-01-01 32.1174108715706 2010-01-01 34.5759131618858 2011-01-01 36.3364747374994 2012-01-01 38.6012738170600 2013-01-01 37.7923287350256 2014-01-01 33.7906750775579 2015-01-01 32.3568014800647 2016-01-01 37.6900724025650 2017-01-01 36.0690361058392 2018-01-01 38.9041050098826 2019-01-01 36.0113704088363