Quarter	Billions of US Dollars
1993-07-01	0.57802
1993-10-01	0.55861
1994-01-01	0.77852
1994-04-01	0.73438
1994-07-01	0.90520
1994-10-01	0.70219
1995-01-01	0.61522
1995-04-01	0.61070
1995-07-01	0.73603
1995-10-01	0.72000
1996-01-01	0.54154
1996-04-01	0.58727
1996-07-01	0.79599
1996-10-01	0.73387
1997-01-01	0.91548
1997-04-01	0.94723
1997-07-01	0.66074
1997-10-01	0.55128
1998-01-01	0.56907
1998-04-01	0.35250
1998-07-01	0.45866
1998-10-01	0.44876
1999-01-01	0.27330
1999-04-01	0.00670
1999-07-01	0.00250
1999-10-01	0.03587
2000-01-01	0.00520
2000-04-01	0.50000
2000-10-01	0.03300
2001-01-01	0.30850
2001-04-01	0.65000
2001-07-01	0.03847
2001-10-01	0.03846
2002-01-01	0.65550
2002-04-01	0.85235
2002-07-01	0.03555
2002-10-01	0.02565
2003-01-01	0.53718
2003-04-01	0.25826
2003-07-01	0.01000
2003-10-01	0.02321
2004-01-01	0.30217
2004-04-01	0.00513
2004-10-01	0.05013
2005-01-01	0.07246
2005-10-01	0.07738
2006-01-01	0.29651
2006-04-01	0.01611
2006-07-01	0.10294
2006-10-01	0.07069
2007-01-01	0.05123
2007-04-01	0.02559
2007-10-01	0.10031
2008-01-01	0.16396
2008-04-01	0.03077
2008-07-01	0.01908
2008-10-01	0.33107
2009-01-01	0.21923
2009-04-01	0.09612
2009-07-01	0.20127
2010-01-01	0.16461
2010-04-01	0.15578
2010-07-01	0.14349
2010-10-01	0.39041
2011-01-01	0.56665
2011-04-01	0.99280
2011-07-01	1.40684
2011-10-01	1.08687
2012-01-01	1.70526
2012-04-01	1.14055
2012-07-01	0.59414
2012-10-01	0.99127
2013-01-01	1.18496
2013-04-01	1.65423
2013-07-01	1.42785
2013-10-01	2.47171
2014-01-01	3.34399
2014-04-01	3.11246
2014-07-01	2.07639
2014-10-01	2.03363
2015-01-01	3.86861
2015-04-01	0.77275