Quarter	Billions of US Dollars
1996-07-01	0.29005
1996-10-01	0.28642
1997-01-01	0.26579
1997-04-01	0.25520
1997-07-01	0.25282
1997-10-01	0.25050
1998-01-01	0.24254
1998-04-01	0.24520
1998-07-01	0.26707
1998-10-01	0.26680
1999-01-01	0.24564
1999-04-01	0.37942
1999-07-01	0.39180
1999-10-01	0.36906
2000-01-01	0.35095
2000-04-01	0.35106
2000-07-01	0.32200
2000-10-01	0.34184
2001-01-01	0.32446
2001-04-01	0.31153
2001-07-01	0.33545
2001-10-01	0.32376
2002-01-01	0.32049
2002-04-01	0.36645
2002-07-01	0.13676
2002-10-01	0.14545
2003-01-01	0.15111
2003-04-01	0.15849
2003-07-01	0.62769
2003-10-01	0.68038
2004-01-01	0.65851
2004-04-01	0.48620
2004-07-01	0.49636
2004-10-01	0.54484
2005-01-01	0.51856
2005-04-01	0.48368
2005-07-01	0.48168
2005-10-01	0.47188
2006-01-01	0.48416
2006-04-01	0.50852
2006-07-01	0.50640
2006-10-01	0.52680
2007-01-01	0.53272
2007-04-01	1.21545
2007-07-01	1.27611
2007-10-01	1.32489
2008-01-01	1.42308
2008-04-01	1.41876
2008-07-01	0.71515
2008-10-01	0.69585
2009-01-01	0.66540
2009-04-01	0.70670
2009-07-01	0.73215
2009-10-01	0.72030
2010-01-01	0.67395
2010-04-01	0.61355
2010-07-01	0.68240
2010-10-01	2.00430
2011-01-01	2.13105
2011-04-01	2.16795
2011-07-01	2.02545
2011-10-01	1.94085
2012-01-01	2.00340
2012-04-01	1.88850
2012-07-01	1.93950
2012-10-01	3.47910
2013-01-01	3.42075
2013-04-01	4.21200
2013-07-01	4.27575
2013-10-01	4.31865
2014-01-01	4.31820
2014-04-01	5.66450
2014-07-01	5.39575
2014-10-01	5.28525
2015-01-01	4.93975
2015-04-01	5.04725