Quarter	Billions of US Dollars
1993-07-01	4.1100
1993-10-01	7.4205
1994-01-01	9.1150
1994-04-01	2.7920
1994-07-01	1.9105
1994-10-01	1.2300
1995-01-01	0.9750
1995-04-01	1.2822
1995-07-01	3.9255
1995-10-01	2.3278
1996-01-01	9.2280
1996-04-01	6.9979
1996-07-01	4.2206
1996-10-01	5.8682
1997-01-01	6.1496
1997-04-01	6.4812
1997-07-01	6.1052
1997-10-01	4.3487
1998-01-01	7.3651
1998-04-01	5.3410
1998-07-01	4.3950
1998-10-01	0.0830
1999-01-01	1.0982
1999-04-01	5.6028
1999-07-01	1.8380
1999-10-01	3.7715
2000-01-01	3.4288
2000-04-01	2.9680
2000-07-01	7.0679
2000-10-01	8.5023
2001-01-01	7.6919
2001-04-01	5.7878
2001-07-01	6.3052
2001-10-01	7.3828
2002-01-01	1.8529
2002-04-01	8.1760
2002-07-01	2.7136
2002-10-01	3.2828
2003-01-01	10.2045
2003-04-01	3.3717
2003-07-01	9.9727
2003-10-01	7.0293
2004-01-01	6.6904
2004-04-01	4.3800
2004-07-01	1.7929
2004-10-01	4.8390
2005-01-01	2.4077
2005-04-01	2.1594
2005-07-01	3.1723
2005-10-01	7.4165
2006-01-01	6.3106
2006-04-01	4.1978
2006-07-01	2.7361
2006-10-01	4.2931
2007-01-01	8.3242
2007-04-01	12.1253
2007-07-01	3.3678
2007-10-01	9.5280
2008-01-01	5.7101
2008-04-01	7.6447
2008-07-01	4.8192
2008-10-01	2.3611
2009-01-01	2.9903
2009-04-01	12.2398
2009-07-01	5.9215
2009-10-01	7.1421
2010-01-01	7.2538
2010-04-01	9.8673
2010-07-01	12.6617
2010-10-01	10.8490
2011-01-01	11.0636
2011-04-01	8.1217
2011-07-01	6.1934
2011-10-01	2.0906
2012-01-01	9.1855
2012-04-01	6.2052
2012-07-01	7.9746
2012-10-01	7.1102
2013-01-01	11.1734
2013-04-01	10.2424
2013-07-01	8.5926
2013-10-01	24.0647
2014-01-01	11.9559
2014-04-01	20.4150
2014-07-01	14.4592
2014-10-01	14.4533
2015-01-01	10.2100
2015-04-01	13.4464