Year Percent of GDP 1995-01-01 45.1184603460409 1996-01-01 44.8766825398497 1997-01-01 48.0493010672471 1998-01-01 47.9875537869559 1999-01-01 47.1793022157547 2000-01-01 51.1188843711891 2001-01-01 46.1512515287884 2002-01-01 40.9517472770264 2003-01-01 32.8110039316690 2004-01-01 31.6548027233457 2005-01-01 32.3681491521159 2006-01-01 31.5365806516902 2007-01-01 30.9445157321048 2008-01-01 30.4391469044367 2009-01-01 26.4006437302297 2010-01-01 28.3195155506405 2011-01-01 30.6255028497038 2012-01-01 31.2495512149713 2013-01-01 30.7919982187853 2014-01-01 31.7250489933557 2015-01-01 26.4269040472370 2016-01-01 26.8565855805872 2017-01-01 26.7980909747940