Quarter	Billions of US Dollars
1976-01-01	0.01700
1976-04-01	0.02030
1978-04-01	0.03000
1980-04-01	0.02500
1996-04-01	0.21990
1996-07-01	0.32500
1997-04-01	0.23658
1998-04-01	0.55611
1999-01-01	0.43907
2000-01-01	0.38468
2001-01-01	0.09219
2001-04-01	0.39780
2002-10-01	0.03023
2004-10-01	0.06640
2007-01-01	1.46988
2007-10-01	0.14159
2008-01-01	1.47134
2009-07-01	2.60466
2009-10-01	0.45239
2010-04-01	1.25497
2010-10-01	0.06979
2011-01-01	0.48604
2012-10-01	2.25000
2013-01-01	0.26151
2013-04-01	3.50000
2014-01-01	3.50000
2014-04-01	4.06180