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	0.23417
1996-07-01	0.21844
1996-10-01	0.37236
1997-01-01	0.33625
1997-04-01	0.42078
1997-07-01	1.11144
1997-10-01	0.81928
1998-01-01	1.56272
1998-04-01	1.57080
1998-07-01	1.19909
1998-10-01	1.06733
1999-01-01	0.22500
1999-04-01	0.36500
1999-07-01	0.47500
1999-10-01	0.51732
2000-01-01	1.14171
2000-04-01	1.06742
2000-07-01	0.97818
2000-10-01	1.18235
2001-01-01	0.73587
2001-04-01	0.98874
2001-07-01	1.02115
2001-10-01	0.89346
2002-01-01	0.71751
2002-04-01	0.47919
2002-07-01	0.52954
2002-10-01	0.81181
2003-01-01	0.96146
2003-04-01	1.02688
2003-07-01	0.99000
2003-10-01	0.60000
2004-01-01	0.67400
2004-04-01	0.67400
2004-07-01	0.37400
2004-10-01	1.22400
2005-01-01	0.95000
2005-04-01	1.14000
2005-07-01	1.14745
2005-10-01	0.39745
2006-01-01	0.29745
2006-04-01	0.10745
2006-07-01	0.22500
2006-10-01	0.55000
2007-01-01	0.97500
2007-04-01	0.97500
2007-07-01	1.05000
2007-10-01	0.90500
2008-01-01	0.56880
2008-04-01	0.57757
2008-07-01	0.37013
2008-10-01	0.07545
2009-01-01	0.15900
2009-04-01	0.15900
2009-07-01	0.15000
2009-10-01	0.15000
2010-07-01	0.10000
2010-10-01	0.45300
2011-01-01	0.95300
2011-04-01	0.95300
2011-07-01	1.09435
2011-10-01	0.84885
2012-01-01	0.41135
2012-04-01	0.41135
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