Year	Percent of GDP
1980-01-01	-0.53
1981-01-01	2.44
1982-01-01	3.47
1983-01-01	3.34
1984-01-01	3.99
1985-01-01	4.58
1986-01-01	4.35
1987-01-01	3.78
1988-01-01	4.22
1989-01-01	3.36
1990-01-01	3.21
1991-01-01	3.89
1992-01-01	5.40
1993-01-01	7.18
1994-01-01	5.80
1995-01-01	6.00
1996-01-01	6.47
1997-01-01	8.60
1998-01-01	8.56
1999-01-01	10.06
2000-01-01	11.07
2001-01-01	7.51
2002-01-01	8.19
2003-01-01	12.29
2004-01-01	12.40
2005-01-01	12.90
2006-01-01	13.65
2007-01-01	8.26
2008-01-01	1.86
2009-01-01	9.85
2010-01-01	13.95
2011-01-01	8.46
2012-01-01	9.17
2013-01-01	12.30