Quarter	Billions of US Dollars
2005-07-01	0.69633
2005-10-01	0.54694
2006-01-01	1.15003
2006-04-01	0.20842
2006-07-01	0.06039
2006-10-01	0.23442
2007-01-01	0.27469
2007-04-01	0.32701
2007-07-01	0.09599
2007-10-01	0.03150
2008-01-01	0.18337
2008-04-01	0.13433
2008-07-01	0.13709
2012-04-01	0.08910
2013-07-01	0.03219