Quarter	Billions of US Dollars
1971-10-01	0.02000
1972-04-01	0.03990
1974-07-01	0.00900
1976-10-01	0.01390
1977-04-01	0.00200
1977-07-01	0.02500
1978-01-01	0.09110
1978-07-01	0.07000
1978-10-01	0.04200
1979-01-01	0.08070
1979-07-01	0.11500
1980-04-01	0.12000
1980-07-01	0.02500
1983-01-01	0.02080
1983-04-01	0.10000
1984-10-01	0.10000
1985-07-01	0.03480
1985-10-01	0.05890
1986-10-01	0.17450
1987-01-01	0.06740
1987-04-01	0.05330
1995-10-01	0.02000
1996-07-01	3.29701
1997-01-01	0.50000
1997-07-01	0.81500
1997-10-01	0.13100
1998-04-01	0.30000
1999-01-01	0.50000
2000-07-01	0.35000
2001-01-01	1.03066
2001-10-01	0.45000
2002-01-01	0.18000
2002-04-01	0.17000
2002-07-01	0.25000
2002-10-01	0.43000
2003-01-01	0.27500
2004-01-01	0.57600
2004-10-01	0.60000
2005-04-01	0.15000
2005-07-01	0.25000
2005-10-01	1.13000
2006-01-01	1.66329
2006-04-01	0.10000
2006-07-01	0.31300
2006-10-01	0.30000
2007-01-01	0.45000
2007-10-01	0.47944
2008-04-01	0.71260
2009-01-01	0.32300
2009-10-01	1.00000
2010-04-01	0.01484
2010-10-01	0.00050
2011-01-01	0.50082
2011-07-01	0.91607
2011-10-01	0.40781
2012-04-01	0.35000
2012-07-01	0.80000
2012-10-01	0.28647
2013-01-01	0.31275
2013-04-01	1.22000
2013-07-01	0.10264
2013-10-01	0.50137
2014-01-01	0.48750
2014-04-01	1.11877
2014-07-01	1.25000
2014-10-01	0.43140
2015-01-01	1.37500
2015-04-01	0.48000