Quarter	Billions of US Dollars
1993-10-01	0.04420
1996-07-01	0.00991
1997-04-01	0.23435
2004-01-01	0.00493
2005-10-01	0.02945
2006-01-01	0.00411
2007-04-01	0.10796
2007-07-01	0.03894
2007-10-01	0.06959
2008-01-01	0.05213
2009-01-01	0.00213
2010-01-01	0.00504
2010-07-01	1.06367
2010-10-01	0.77635
2011-01-01	1.25104
2011-07-01	0.02339
2011-10-01	0.26117
2012-10-01	0.75021
2013-07-01	0.51964
2014-01-01	0.00680
2014-04-01	0.00340