Quarter	Billions of US Dollars
1988-10-01	-0.05000
1990-04-01	-0.02550
1993-07-01	0.20500
1993-10-01	0.01500
1994-01-01	0.03808
1994-07-01	0.12000
1994-10-01	0.18400
1995-04-01	-0.06844
1995-10-01	0.04800
1996-01-01	0.09000
1996-04-01	0.11000
1996-10-01	0.20000
1997-01-01	0.02413
1997-04-01	0.61500
1997-07-01	0.34440
1997-10-01	-0.26200
1998-01-01	-0.01100
1998-04-01	-0.02900
1998-07-01	-0.18150
1998-10-01	-0.00625
1999-01-01	-0.08800
1999-07-01	0.11000
1999-10-01	-0.12500
2000-04-01	-0.05000
2000-07-01	-0.06150
2000-10-01	-0.03500
2001-01-01	-0.00300
2001-04-01	-0.06000
2001-07-01	-0.10000
2001-10-01	-0.14475
2002-01-01	-0.07549
2002-04-01	-0.04000
2002-07-01	-0.11000
2002-10-01	0.12500
2003-04-01	0.20000
2003-07-01	-0.27011
2003-10-01	0.28000
2004-07-01	0.12500
2005-01-01	0.25000
2006-01-01	0.12500
2006-04-01	0.12500
2006-07-01	0.13000
2006-10-01	0.25000
2007-01-01	0.35179
2007-04-01	0.44417
2007-07-01	-0.12500
2007-10-01	-0.12500
2008-01-01	-0.54959
2008-04-01	-0.39401
2008-07-01	-0.20000
2008-10-01	-0.28000
2009-07-01	0.08500
2009-10-01	0.12070
2010-01-01	0.16250
2010-10-01	0.30000
2011-01-01	0.30000
2011-10-01	-0.15000
2012-01-01	0.80000
2012-04-01	0.35000
2012-07-01	-0.09820
2012-10-01	-0.10750
2013-01-01	-0.06250
2015-01-01	0.57900
2015-04-01	-0.04300