Year Percent of GDP 1998-01-01 143.95025859446300 1999-01-01 100.74483745231400 2000-01-01 62.14928274200610 2001-01-01 48.98351894091870 2002-01-01 41.39586039416250 2005-01-01 16.66086844756700 2006-01-01 9.89107286043072 2007-01-01 7.15843296488458 2008-01-01 6.49529517792077 2009-01-01 8.69787049825806 2010-01-01 9.09811373721887 2011-01-01 8.61692283713047 2012-01-01 8.54382076495329 2013-01-01 9.04888217925202 2014-01-01 11.17646808051780 2015-01-01 13.49208433408850 2016-01-01 14.15371447271950