Year Percent of GDP 1990-01-01 45.7414523316285 1991-01-01 40.2756295663842 1992-01-01 42.7093574260874 1993-01-01 37.4975968521644 1994-01-01 36.5705901605804 1995-01-01 30.8043248823304 1996-01-01 23.9231422090700 1997-01-01 72.4853185253111 1998-01-01 55.2040876648634 1999-01-01 45.2079671076106 2002-01-01 32.2241265309989 2003-01-01 29.7173962466428 2008-01-01 34.2250282105618 2009-01-01 29.9973063815670 2010-01-01 26.1661592780012 2011-01-01 24.8651446692594 2012-01-01 25.0344008432508 2013-01-01 27.7819272178664 2014-01-01 27.4216121994064 2015-01-01 30.3091261378040 2016-01-01 31.3534346791966