Year Percent of GDP 1980-01-01 42.519 1981-01-01 44.769 1982-01-01 43.050 1983-01-01 41.845 1984-01-01 42.250 1985-01-01 41.315 1986-01-01 41.294 1987-01-01 39.383 1988-01-01 37.127 1989-01-01 32.599 1990-01-01 28.623 1991-01-01 28.568 1992-01-01 33.360 1993-01-01 38.131 1994-01-01 40.945 1995-01-01 43.926 1996-01-01 44.032 1997-01-01 43.400 1998-01-01 41.183 1999-01-01 39.832 2000-01-01 37.007 2001-01-01 34.319 2002-01-01 34.404 2003-01-01 35.589 2004-01-01 38.594 2005-01-01 39.790 2006-01-01 40.710 2007-01-01 41.744 2008-01-01 49.688 2009-01-01 63.739 2010-01-01 75.236 2011-01-01 80.799 2012-01-01 84.088 2013-01-01 85.150 2014-01-01 87.014 2015-01-01 87.876 2016-01-01 87.909 2017-01-01 87.525