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	0.10000
1994-10-01	0.10000
1995-01-01	0.10000
1995-04-01	0.21000
1995-07-01	0.21000
1995-10-01	0.21000
1996-01-01	0.21000
1996-04-01	0.16000
1996-07-01	0.26814
1996-10-01	0.26345
1997-01-01	0.25674
1997-04-01	0.26490
1997-07-01	0.25917
1997-10-01	0.25234
1998-01-01	0.25087
1998-04-01	0.24520
1998-07-01	0.24872
1998-10-01	0.21381
1999-01-01	0.20967
1999-04-01	0.20909
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	0.50638
2010-07-01	1.15680
2010-10-01	1.17377
2011-01-01	1.67223
2011-04-01	2.92113
2011-07-01	2.82470
2011-10-01	3.29396
2012-01-01	3.30886
2012-04-01	3.33241
2012-07-01	5.03043
2012-10-01	5.01307
2013-01-01	6.02006
2013-04-01	6.05985
2013-07-01	6.03628
2013-10-01	5.98400
2014-01-01	4.98690
2014-04-01	5.13650
2014-07-01	4.61710
2014-10-01	4.63381
2015-01-01	4.62701
2015-04-01	4.63094