Quarter	Billions of US Dollars
1993-07-01	0.39000
1993-10-01	0.60561
1994-01-01	0.61032
1994-04-01	0.41521
1994-07-01	0.40499
1994-10-01	0.35125
1995-01-01	0.36279
1995-04-01	0.36188
1995-07-01	0.18743
1995-10-01	0.37384
1996-01-01	0.55206
1996-04-01	0.53971
1996-07-01	0.61824
1996-10-01	0.32282
1997-01-01	0.13782
1997-04-01	0.13710
1997-07-01	0.24105
1997-10-01	0.41550
1998-01-01	0.40510
1998-04-01	0.40476
1998-07-01	0.39708
1998-10-01	0.40491
1999-01-01	0.39896
1999-04-01	0.39585
1999-07-01	0.39846
1999-10-01	0.41252
2000-01-01	0.40992
2000-04-01	0.41149
2000-07-01	0.59586
2000-10-01	0.54665
2001-01-01	0.53859
2001-04-01	0.53367
2001-07-01	0.54000
2001-10-01	0.51123
2002-01-01	0.50950
2002-04-01	0.53380
2002-07-01	0.62157
2002-10-01	0.67000
2003-01-01	0.67000
2003-04-01	0.67000
2003-07-01	0.49000
2003-10-01	0.90694
2004-01-01	0.91688
2004-04-01	0.91234
2004-07-01	0.90976
2004-10-01	0.48000
2005-01-01	0.93000
2005-04-01	0.93000
2005-07-01	0.68000
2005-10-01	0.90000
2006-01-01	0.45000
2006-04-01	0.45000
2006-07-01	0.87382
2006-10-01	0.43965
2007-01-01	0.44342
2007-04-01	0.44783
2008-01-01	0.35289
2008-04-01	0.34946
2008-07-01	0.31893
2008-10-01	0.55687
2009-01-01	0.24000
2009-04-01	0.24000
2009-07-01	0.24000
2010-01-01	0.17000
2010-04-01	0.17000
2010-07-01	0.17000
2010-10-01	0.17000