Quarter	Billions of US Dollars
1987-10-01	-0.01000
1988-07-01	-0.00400
1989-10-01	0.09620
1990-04-01	0.04670
1990-07-01	0.00940
1990-10-01	0.03200
1991-01-01	0.07460
1993-04-01	-0.06360
1993-07-01	-0.00843
1993-10-01	-0.02788
1994-10-01	0.01041
1995-10-01	-0.01600
1996-01-01	-0.09452
1996-04-01	-0.01900
1996-10-01	-0.07772
2000-01-01	-0.05604
2004-07-01	1.59509
2004-10-01	0.01481
2005-01-01	0.09240
2007-01-01	-0.09172
2008-04-01	1.76278
2008-07-01	0.25050
2011-01-01	0.55906
2013-04-01	0.22889
2013-07-01	0.18018
2014-07-01	-0.00856