Quarter	Billions of US Dollars
1993-07-01	0.05000
1993-10-01	0.10000
1994-01-01	0.10000
1994-04-01	0.10000
1994-07-01	0.22500
1994-10-01	0.25500
1995-01-01	0.25500
1995-04-01	0.38000
1995-07-01	0.38000
1995-10-01	0.38000
1996-01-01	0.38000
1996-04-01	0.34000
1996-07-01	0.42314
1996-10-01	0.38845
1997-01-01	0.38174
1997-04-01	0.38990
1997-07-01	0.38417
1997-10-01	0.37734
1998-01-01	0.37587
1998-04-01	0.37020
1998-07-01	0.37372
1998-10-01	0.33881
1999-01-01	0.33467
1999-04-01	0.33409
1999-07-01	0.22231
1999-10-01	0.22742
2000-01-01	0.22337
2000-04-01	0.11385
2000-07-01	0.11127
2000-10-01	0.10444
2001-01-01	0.09631
2001-04-01	0.09674
2007-04-01	0.40000
2007-07-01	0.40000
2007-10-01	0.40000
2008-01-01	0.40000
2008-04-01	0.40000
2008-07-01	0.40000
2008-10-01	0.40000
2009-01-01	0.40000
2009-04-01	0.40000
2009-07-01	0.40000
2009-10-01	0.40000
2010-01-01	0.40000
2010-04-01	0.40000
2010-07-01	1.02000
2010-10-01	1.02000
2011-01-01	1.54000
2011-04-01	2.54000
2011-07-01	2.54000
2011-10-01	3.14000
2012-01-01	3.14000
2012-04-01	3.14000
2012-07-01	5.09000
2012-10-01	5.09000
2013-01-01	6.09000
2013-04-01	6.39000
2013-07-01	6.39000
2013-10-01	6.39000
2014-01-01	5.39436
2014-04-01	5.39436
2014-07-01	4.87436
2014-10-01	4.87436
2015-01-01	4.87436
2015-04-01	5.27436