Quarter	Billions of US Dollars
2003-10-01	0.20130
2004-01-01	0.08930
2004-07-01	0.24999
2006-01-01	-0.30372
2006-07-01	0.39941
2006-10-01	-0.04236
2007-04-01	1.01220
2008-04-01	0.18360
2011-10-01	1.31873
2012-01-01	-0.00051
2012-04-01	0.02627
2012-07-01	-0.21996
2013-10-01	0.07595
2014-01-01	0.01006
2014-10-01	0.02009
2015-01-01	0.03925
2015-04-01	0.00202