Year Percent of GDP 2004-01-01 11.8730992335317 2005-01-01 12.3479591670558 2006-01-01 13.8044932280038 2007-01-01 11.2459093779490 2008-01-01 11.1844330380840 2009-01-01 13.9888856946526 2010-01-01 13.7769229039914 2011-01-01 16.6868433167321 2012-01-01 19.0116823024735 2013-01-01 17.7843490935299 2014-01-01 18.5361150069835 2015-01-01 19.3539936891107 2016-01-01 19.8836426537325 2017-01-01 24.5536359810630 2018-01-01 24.3569577136538 2019-01-01 23.8952284836596