Quarter	Billions of US Dollars
1993-07-01	0.5126
1993-10-01	0.6076
1994-01-01	0.4919
1994-04-01	0.4769
1994-07-01	0.4769
1994-10-01	0.4819
1995-01-01	0.4219
1995-04-01	0.4219
1995-07-01	0.4219
1995-10-01	0.4219
1996-01-01	0.9884
1996-04-01	1.2584
1996-07-01	1.6984
1996-10-01	1.6984
1997-01-01	1.6819
1997-04-01	1.6819
1997-07-01	1.6819
1997-10-01	2.3319
1998-01-01	2.3319
1998-04-01	2.7819
1998-07-01	2.7819
1998-10-01	2.9949
1999-01-01	3.1949
1999-04-01	3.4949
1999-07-01	3.7081
1999-10-01	3.6958
2000-01-01	3.7859
2000-04-01	3.7860
2000-07-01	4.1666
2000-10-01	4.1833
2001-01-01	4.1686
2001-04-01	4.3777
2001-07-01	5.2189
2001-10-01	5.2091
2002-01-01	5.2063
2002-04-01	5.2451
2002-07-01	5.5036
2002-10-01	6.2318
2003-01-01	6.1682
2003-04-01	6.1024
2003-07-01	6.1169
2003-10-01	6.3365
2004-01-01	6.1718
2004-04-01	6.1704
2004-07-01	5.9186
2004-10-01	6.4186
2005-01-01	6.4186
2005-04-01	6.5686
2005-07-01	6.8739
2005-10-01	6.8739
2006-01-01	6.4171
2006-04-01	6.6171
2006-07-01	6.2171
2006-10-01	6.7171
2007-01-01	6.7006
2007-04-01	6.9706
2007-07-01	6.9615
2007-10-01	6.7115
2008-01-01	6.7025
2008-04-01	6.6769
2008-07-01	7.0662
2008-10-01	7.0594
2009-01-01	7.6491
2009-04-01	7.3152
2009-07-01	7.4715
2009-10-01	8.5249
2010-01-01	9.0199
2010-04-01	9.2698
2010-07-01	9.9660
2010-10-01	10.9668
2011-01-01	12.6171
2011-04-01	12.8478
2011-07-01	12.4072
2011-10-01	14.0333
2012-01-01	14.3534
2012-04-01	14.8426
2012-07-01	16.3405
2012-10-01	16.7015
2013-01-01	17.3045
2013-04-01	18.4895
2013-07-01	19.5412
2013-10-01	22.2487
2014-01-01	22.5912
2014-04-01	22.8905
2014-07-01	27.3811
2014-10-01	29.1968
2015-01-01	30.1054
2015-04-01	32.2661