Quarter	Billions of US Dollars
1993-07-01	0.03000
1993-10-01	0.04500
1994-01-01	0.03000
1994-04-01	0.13096
1994-07-01	0.10157
1994-10-01	0.10026
1995-01-01	0.11192
1995-04-01	0.05000
1995-07-01	0.05000
1995-10-01	0.20000
1996-01-01	0.25845
1996-04-01	0.20917
1996-07-01	0.20943
1996-10-01	0.32174
1997-01-01	0.26200
1997-04-01	0.28700
1997-07-01	0.96200
1997-10-01	0.70000
1998-01-01	1.54000
1998-04-01	1.51400
1998-07-01	1.08800
1998-10-01	0.96300
1999-01-01	0.12500
1999-04-01	0.17500
1999-07-01	0.28500
1999-10-01	0.19500
2000-01-01	0.78055
2000-04-01	0.79055
2000-07-01	0.78055
2000-10-01	0.92030
2001-01-01	0.41501
2001-04-01	0.66536
2001-07-01	0.60857
2001-10-01	0.57587
2002-01-01	0.50000
2002-04-01	0.26500
2002-07-01	0.41954
2002-10-01	0.55181
2003-01-01	0.60146
2003-04-01	0.66688
2003-07-01	0.63000
2003-10-01	0.50000
2004-01-01	0.30000
2004-04-01	0.30000
2004-10-01	0.85000
2005-01-01	0.85000
2005-04-01	0.85000
2005-07-01	0.85745
2005-10-01	0.00745
2006-01-01	0.00745
2006-04-01	0.00745
2006-07-01	0.12500
2006-10-01	0.55000
2007-01-01	0.65000
2007-04-01	1.05515
2007-07-01	1.15037
2007-10-01	1.02163
2008-01-01	0.56880
2008-04-01	0.57757
2008-07-01	0.36113
2008-10-01	0.06645
2009-01-01	0.15000
2009-04-01	0.15000
2009-07-01	0.15000
2009-10-01	0.15000
2010-10-01	0.35300
2011-01-01	0.65300
2011-04-01	0.65300
2011-07-01	0.75120
2011-10-01	0.50570
2012-01-01	0.26820
2012-04-01	0.26820
2012-07-01	0.52000
2012-10-01	0.41250
2013-01-01	0.35000
2013-04-01	0.35000
2013-07-01	0.50000
2013-10-01	0.50000
2014-01-01	0.75000
2014-04-01	0.75000
2014-07-01	0.25000
2014-10-01	0.25000
2015-04-01	0.30000