Quarter	Billions of US Dollars
1993-07-01	0.46300
1993-10-01	0.14250
1994-01-01	0.48326
1994-04-01	0.08826
1994-07-01	0.25732
1994-10-01	0.16189
1995-01-01	-1.04440
1995-04-01	0.04000
1995-07-01	0.26789
1995-10-01	0.54074
1996-01-01	-0.00904
1996-04-01	-0.28193
1996-07-01	-0.49209
1996-10-01	-0.12266
1997-01-01	0.01013
1997-04-01	-0.16663
1997-07-01	0.00725
1997-10-01	0.01521
1998-01-01	-0.07483
1998-04-01	-0.00297
1998-07-01	-0.27167
1998-10-01	-0.14552
1999-01-01	-0.05017
1999-04-01	0.22208
1999-07-01	-0.11047
1999-10-01	0.29713
2000-01-01	0.07818
2000-04-01	-0.48045
2000-07-01	0.20297
2000-10-01	-0.08528
2001-01-01	0.03127
2001-04-01	-0.14934
2001-07-01	-0.29045
2001-10-01	-0.06945
2002-01-01	-0.00650
2002-04-01	0.01000
2002-10-01	-0.01850
2004-10-01	0.03500
2005-04-01	0.02707
2005-10-01	-0.03500
2006-04-01	-0.02700
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