Quarter	Billions of US Dollars
1993-07-01	0.37050
1993-10-01	0.14950
1994-01-01	0.37450
1994-04-01	0.01700
1994-07-01	0.14730
1994-10-01	0.05475
1995-01-01	-0.61390
1995-04-01	0.01568
1995-07-01	0.12038
1995-10-01	0.21824
1996-01-01	0.17684
1996-04-01	0.12382
1996-07-01	-0.65788
1996-10-01	-0.20090
1997-01-01	0.02250
1997-04-01	-0.16609
1997-07-01	0.60454
1997-10-01	-0.02770
1998-01-01	0.15347
1998-04-01	0.21918
1998-07-01	-0.76584
1998-10-01	0.06659
1999-01-01	-0.12595
1999-04-01	0.17968
1999-07-01	-0.14406
1999-10-01	0.43668
2000-01-01	0.13673
2000-04-01	-0.16731
2000-07-01	0.19458
2000-10-01	-0.21940
2001-01-01	-0.00421
2001-04-01	-0.34809
2001-07-01	-0.38059
2001-10-01	-0.04660
2002-01-01	-0.26954
2002-04-01	-0.08000
2002-10-01	-0.01850
2008-04-01	0.06500
2009-01-01	0.00000
2009-04-01	-0.06500
2011-10-01	0.08500
2012-10-01	-0.08500