Quarter	Billions of US Dollars
1993-07-01	0.0034
1993-10-01	0.0034
1994-01-01	0.0030
1994-04-01	0.0030
1994-07-01	0.0258
1994-10-01	0.1035
1995-01-01	0.1045
1995-04-01	0.1026
1995-07-01	0.1831
1995-10-01	0.1076
1996-01-01	0.1075
1996-04-01	0.3835
1996-07-01	0.2775
1996-10-01	0.2725
1997-01-01	0.2526
1997-04-01	0.0023
1997-07-01	0.0172
1997-10-01	0.1547
1998-01-01	0.1547
1998-04-01	0.4041
1998-07-01	0.3939
1998-10-01	0.6340
1999-01-01	0.6836
1999-04-01	0.4250
1999-07-01	0.6366
1999-10-01	0.4781
2000-01-01	0.4221
2000-04-01	0.7569
2000-07-01	0.5548
2000-10-01	0.3153
2001-01-01	0.3540
2001-04-01	0.1801
2001-07-01	0.3899
2001-10-01	0.6615
2002-01-01	0.6328
2002-04-01	0.6472
2002-07-01	0.3719
2002-10-01	0.0713
2003-01-01	0.1496
2003-04-01	0.2562
2003-07-01	0.3019
2003-10-01	0.3124
2004-01-01	0.6133
2004-04-01	1.2564
2004-07-01	2.0986
2004-10-01	2.5442
2005-01-01	1.9847
2005-04-01	1.5476
2005-07-01	0.7107
2005-10-01	0.8199
2006-01-01	1.3434
2006-04-01	1.2681
2006-07-01	1.5597
2006-10-01	1.4663
2007-01-01	1.0592
2007-04-01	1.0230
2007-07-01	1.6108
2007-10-01	2.5156
2008-01-01	3.1867
2008-04-01	3.5504
2008-07-01	3.2198
2008-10-01	2.7115
2009-01-01	2.1550
2009-04-01	1.6078
2009-07-01	1.6646
2009-10-01	1.2509
2010-01-01	1.8704
2010-04-01	4.0707
2010-07-01	4.1776
2010-10-01	4.1459
2011-01-01	3.6177
2011-04-01	2.7953
2011-07-01	2.8847
2011-10-01	5.6764
2012-01-01	9.4100
2012-04-01	8.5800
2012-07-01	11.3851
2012-10-01	13.8115
2013-01-01	7.3421
2013-04-01	10.3518
2013-07-01	10.6108
2013-10-01	7.6946
2014-01-01	7.6401
2014-04-01	4.6427
2014-07-01	1.8658
2014-10-01	1.8679
2015-01-01	3.4291
2015-04-01	3.9779