Quarter	Billions of US Dollars
1993-07-01	0.03850
1994-01-01	0.01950
1994-04-01	-0.00600
1994-07-01	-0.01100
1994-10-01	-0.00050
1995-01-01	-0.01500
1995-04-01	-0.00900
1995-10-01	-0.01000
1996-04-01	0.00500
1996-07-01	-0.01000
1997-01-01	0.02000
1997-04-01	-0.00500
1997-07-01	0.00500
1997-10-01	-0.00500
1998-01-01	-0.00500
1998-04-01	0.00500
1998-07-01	-0.01500
1999-01-01	-0.00250
1999-04-01	0.01000
2000-04-01	0.00500
2000-07-01	-0.00500
2001-04-01	0.06372
2001-07-01	-0.04785
2001-10-01	0.05800
2002-01-01	-0.01500
2002-04-01	0.01153
2002-07-01	-0.00812
2002-10-01	-0.03058
2003-01-01	0.07737
2003-04-01	-0.12510
2003-07-01	0.06000
2003-10-01	-0.02700
2004-01-01	0.01700
2004-04-01	-0.04000
2004-07-01	0.00500
2004-10-01	-0.01150
2005-01-01	0.07944
2005-04-01	-0.04000
2005-07-01	-0.01658
2005-10-01	0.03404
2006-01-01	-0.04808
2006-07-01	0.01000
2006-10-01	-0.02000
2007-07-01	0.04000
2007-10-01	0.06000
2008-01-01	-0.01000
2008-04-01	-0.04500
2008-07-01	-0.05500