Quarter	Billions of US Dollars
1993-07-01	0.06650
1995-10-01	-0.03910
1996-07-01	-0.11856
1997-10-01	-0.06980
2008-04-01	0.29775
2009-04-01	0.26610
2012-04-01	-0.32035
2013-10-01	0.22109
2014-04-01	-0.33759