Year Percent of GDP 2004-01-01 13.7370218414749 2005-01-01 13.1927813908990 2006-01-01 15.4492153183722 2007-01-01 12.6234358000776 2008-01-01 10.1885166917220 2009-01-01 12.5635831748829 2010-01-01 13.1342864104017 2011-01-01 13.0062252121384 2012-01-01 18.2462821689299 2013-01-01 14.0399537416010 2014-01-01 14.5711870187179 2015-01-01 13.4420681421404 2016-01-01 13.0111713205394 2017-01-01 19.8701178142916 2018-01-01 20.6260627566659 2019-01-01 21.0575684460867