Quarter	Billions of US Dollars
1993-07-01	0.27100
1993-10-01	-0.00300
1994-01-01	-0.01000
1994-04-01	0.00100
1994-07-01	-0.01200
1994-10-01	0.00500
1995-01-01	0.00400
1995-04-01	-0.03700
1995-07-01	0.00450
1995-10-01	-0.00150
1996-01-01	-0.00700
1996-04-01	-0.01500
1996-07-01	0.11869
1996-10-01	0.03517
1997-01-01	0.03939
1997-04-01	-0.00925
1997-07-01	-0.11893
1997-10-01	-0.01900
1998-01-01	0.33510
1998-07-01	0.22932
1998-10-01	0.03677
1999-01-01	0.08843
1999-04-01	0.22322
1999-07-01	0.07185
1999-10-01	0.17730
2000-01-01	0.07863
2000-04-01	0.61103
2000-07-01	0.02071
2000-10-01	-0.05232
2001-01-01	-0.09492
2001-04-01	0.16190
2001-07-01	0.47045
2001-10-01	-0.04000
2002-04-01	-0.22500
2002-07-01	0.00422
2002-10-01	0.11790
2003-01-01	0.00103
2003-04-01	-0.59910
2003-07-01	-0.46144
2003-10-01	-0.02441
2004-01-01	0.02701
2004-04-01	-0.00177
2004-10-01	-0.12755
2005-01-01	-0.02060
2005-04-01	0.39344
2005-10-01	0.19446
2006-01-01	-0.15000
2006-10-01	0.71000
2008-04-01	-0.40500
2008-10-01	-0.23625
2009-01-01	-0.17336
2009-04-01	0.32250
2009-10-01	0.28500
2010-01-01	0.06890
2010-10-01	0.58750
2011-01-01	0.12500
2011-04-01	0.43749
2011-07-01	-0.50000
2011-10-01	0.70300
2012-01-01	0.40000
2012-04-01	1.07750
2012-07-01	0.15000
2012-10-01	-0.17500
2013-01-01	0.60000
2013-04-01	0.50000
2013-07-01	0.30090
2013-10-01	0.34421
2014-01-01	0.50000
2014-04-01	-0.40000
2014-07-01	0.01290
2014-10-01	-0.12860
2015-01-01	0.30000
2015-04-01	0.18225