Year Percent of GDP 2004-01-01 68.8497683186120 2005-01-01 74.8674890857700 2006-01-01 78.5863034006664 2007-01-01 77.5805564776813 2008-01-01 75.5640125633284 2009-01-01 77.5004242345293 2010-01-01 80.1041846439323 2011-01-01 78.4780769656115 2012-01-01 82.0790133444839 2013-01-01 89.4406054541287 2014-01-01 95.6175539185961 2015-01-01 98.8848413403659 2016-01-01 104.0771822867430 2017-01-01 105.4861371522700 2018-01-01 104.6153494444560 2019-01-01 103.0536621571700