Quarter	Billions of US Dollars
1983-07-01	0.03790
1984-01-01	0.10000
1985-04-01	0.19620
1987-04-01	0.08480
1988-10-01	0.08280
1995-07-01	0.06000
1996-04-01	0.06000
1997-04-01	0.20000
1997-07-01	0.52544
1998-10-01	0.09359
1999-04-01	0.21135
1999-10-01	0.10000
2000-01-01	0.18681
2000-04-01	0.10000
2001-04-01	0.12231
2001-07-01	0.12321
2002-01-01	0.25758
2002-04-01	0.32500
2002-07-01	0.05000
2003-01-01	0.50000
2003-04-01	0.25000
2003-07-01	0.33450
2004-04-01	0.61473
2004-10-01	0.06200
2005-04-01	0.41972
2005-07-01	0.40000
2005-10-01	0.50000
2006-01-01	0.50000
2006-07-01	0.30000
2007-04-01	0.99400
2007-07-01	0.20000
2008-01-01	0.35000
2008-04-01	0.19000
2009-04-01	0.75000
2009-07-01	0.10000
2009-10-01	0.63330
2010-01-01	1.25000
2010-04-01	0.75000
2010-10-01	0.51782
2011-10-01	1.17990
2012-01-01	0.67028
2012-04-01	1.50000
2012-07-01	0.09627
2012-10-01	0.75000
2013-04-01	0.69929
2013-07-01	1.50000
2014-04-01	0.14051
2014-07-01	1.25000
2015-01-01	1.07758
2015-04-01	0.40000