Year Percent of GDP 2000-01-01 69.9968 2001-01-01 62.9502 2002-01-01 61.7933 2003-01-01 58.8532 2004-01-01 55.9658 2005-01-01 59.1179 2006-01-01 54.3586 2007-01-01 50.5281 2008-01-01 44.7338 2009-01-01 45.4518 2010-01-01 48.4928 2011-01-01 52.1368 2012-01-01 56.0074 2013-01-01 61.2162 2014-01-01 62.8380 2015-01-01 63.0808 2016-01-01 64.2086 2017-01-01 64.0418 2018-01-01 63.6965 2019-01-01 62.0788