Year Percent of GDP 2004-01-01 25.8356456468575 2005-01-01 23.7728095272115 2006-01-01 24.9732062991557 2007-01-01 33.0178852655659 2008-01-01 40.9606049281413 2009-01-01 35.6471285792462 2010-01-01 23.4242258265620 2011-01-01 17.6377361238737 2012-01-01 17.5609097935974 2013-01-01 15.8606174112010 2014-01-01 15.5796959468804 2015-01-01 13.0567741768933 2016-01-01 14.7927662244243 2017-01-01 15.1505178962111 2018-01-01 17.0716597276906 2019-01-01 18.9585207343284