Quarter	Billions of US Dollars
1993-07-01	0.060
1996-07-01	-0.012
1997-01-01	-0.012
1997-07-01	0.150
1997-10-01	-0.012
1998-01-01	-0.012
1998-07-01	-0.012
2001-10-01	0.325
2003-07-01	0.300
2004-10-01	0.430
2007-07-01	-0.150
2008-04-01	0.035
2011-07-01	0.150
2011-10-01	-0.325
2012-01-01	0.200
2012-04-01	0.700
2012-10-01	0.500
2013-01-01	0.700
2013-04-01	0.100
2013-07-01	-0.300
2014-01-01	0.800
2014-10-01	-0.100