Year	Percent of GDP
1980-01-01	48.813
1981-01-01	53.952
1982-01-01	58.962
1983-01-01	64.918
1984-01-01	66.967
1985-01-01	69.683
1986-01-01	75.545
1987-01-01	77.269
1988-01-01	73.210
1989-01-01	66.847
1990-01-01	64.304
1991-01-01	63.492
1992-01-01	67.994
1993-01-01	74.191
1994-01-01	84.992
1995-01-01	95.898
1996-01-01	101.034
1997-01-01	106.677
1998-01-01	117.941
1999-01-01	131.120
2000-01-01	137.891
2001-01-01	146.832
2002-01-01	156.824
2003-01-01	162.731
2004-01-01	171.660
2005-01-01	176.783
2006-01-01	176.385
2007-01-01	175.426
2008-01-01	183.416
2009-01-01	201.043
2010-01-01	207.852
2011-01-01	222.087
2012-01-01	229.008
2013-01-01	232.469
2014-01-01	236.069
2015-01-01	231.261
2016-01-01	235.589