Quarter	Billions of US Dollars
1990-01-01	0.03210
1991-10-01	0.01720
1992-10-01	0.03830
1993-01-01	-0.03305
1993-04-01	0.12240
1993-07-01	0.14300
1993-10-01	0.50500
1994-01-01	0.30230
1994-04-01	-0.12041
1994-07-01	-0.01100
1994-10-01	-0.03700
1995-04-01	0.09850
1995-07-01	0.17150
1995-10-01	0.06690
1996-01-01	0.26517
1996-04-01	0.24989
1996-07-01	0.31488
1996-10-01	-0.09867
1997-01-01	0.20756
1997-04-01	0.41229
1997-07-01	0.49109
1997-10-01	-0.12063
1998-01-01	-0.10038
1998-04-01	-0.02962
1998-07-01	-0.10506
1998-10-01	-0.04470
1999-01-01	-0.00858
1999-04-01	-0.03748
1999-07-01	-0.18993
1999-10-01	0.03658
2000-01-01	-0.00374
2000-04-01	-0.07908
2000-10-01	-0.18532
2001-01-01	-0.25935
2001-04-01	-0.02184
2001-07-01	-0.26321
2001-10-01	-0.08268
2002-04-01	-0.21211
2002-07-01	-0.27608
2002-10-01	-0.00585
2003-04-01	-0.20655
2003-07-01	-0.00023
2003-10-01	-0.19921
2004-04-01	-0.00720
2004-10-01	-0.01143
2005-04-01	-0.00787
2005-10-01	-0.02055
2006-04-01	-0.08733
2007-01-01	-0.25820
2007-07-01	-0.25000
2008-07-01	-0.02956
2010-07-01	0.50000
2011-04-01	0.70000
2011-07-01	0.19158
2012-04-01	0.50000
2012-10-01	1.27786
2014-04-01	0.30000
2015-04-01	0.02931