Year	Percent of GDP
1980-01-01	3.49
1981-01-01	3.74
1982-01-01	3.66
1983-01-01	4.89
1984-01-01	4.99
1985-01-01	5.18
1986-01-01	4.87
1987-01-01	4.89
1988-01-01	4.58
1989-01-01	4.95
1990-01-01	4.45
1991-01-01	4.55
1992-01-01	4.53
1993-01-01	4.88
1994-01-01	4.39
1995-01-01	4.20
1996-01-01	4.25
1997-01-01	5.19
1998-01-01	5.41
1999-01-01	5.75
2000-01-01	6.58
2001-01-01	6.20
2002-01-01	6.00
2003-01-01	6.09
2004-01-01	6.21
2005-01-01	6.61
2006-01-01	7.31
2007-01-01	7.93
2008-01-01	8.41
2009-01-01	7.82
2010-01-01	8.07
2011-01-01	7.14
2012-01-01	6.61
2013-01-01	6.22