Year Percent of GDP 2004-01-01 141.7621655032230 2005-01-01 101.4723513411060 2006-01-01 104.3024441596420 2007-01-01 86.8848900281810 2008-01-01 90.5046189596267 2009-01-01 93.1865264459964 2010-01-01 31.9421314474431 2011-01-01 26.2502462818708 2012-01-01 23.1689567452282 2013-01-01 19.1191243423599 2014-01-01 16.8027858231792 2015-01-01 16.7872335902273 2016-01-01 19.3456913313778 2017-01-01 18.1082884459655 2018-01-01 16.2153131501723 2019-01-01 14.9513128673986