Year Percent of GDP 1998-01-01 5.40391549112143 1999-01-01 19.06535087040710 2000-01-01 17.70902168022980 2003-01-01 52.53541953337900 2008-01-01 64.76493635528560 2009-01-01 68.57884045679460 2010-01-01 72.33779316014710 2011-01-01 62.77180937386070 2012-01-01 65.45031298928100 2013-01-01 67.44253628094140 2014-01-01 80.29752161307150 2015-01-01 67.11654610465000 2016-01-01 57.96599449109120