Quarter	Billions of US Dollars
1993-07-01	0.5624
1993-10-01	0.5294
1994-01-01	0.1396
1994-04-01	0.0463
1994-07-01	0.0106
1994-10-01	0.0045
1995-01-01	0.0015
1996-10-01	0.0851
1997-01-01	0.0797
1997-04-01	0.0775
1997-07-01	0.0764
1997-10-01	0.0761
1998-01-01	0.0743
1998-04-01	0.0756
1998-07-01	0.0807
1998-10-01	0.0803
1999-01-01	0.0741
1999-04-01	0.0715
1999-07-01	0.0738
1999-10-01	0.0696
2000-01-01	0.0665
2000-04-01	0.0666
2000-07-01	0.0615
2000-10-01	0.0649
2001-01-01	0.0608
2001-04-01	0.2922
2001-07-01	0.4063
2001-10-01	0.5506
2002-01-01	0.5448
2002-04-01	0.6224
2002-07-01	0.6160
2002-10-01	0.6552
2003-01-01	0.6793
2003-04-01	0.7121
2003-07-01	0.9670
2003-10-01	1.9599
2004-01-01	2.9006
2004-04-01	2.8752
2004-07-01	3.8788
2004-10-01	4.3154
2005-01-01	4.6198
2005-04-01	5.2195
2005-07-01	5.4245
2005-10-01	4.8198
2006-01-01	5.4650
2006-04-01	6.8419
2006-07-01	6.8282
2006-10-01	6.2695
2007-01-01	7.9579
2007-04-01	10.4709
2007-07-01	8.4282
2007-10-01	8.4791
2008-01-01	10.2102
2008-04-01	9.2085
2008-07-01	10.4647
2008-10-01	5.7800
2009-01-01	5.1676
2009-04-01	5.5978
2009-07-01	6.3665
2009-10-01	6.1357
2010-01-01	5.8225
2010-04-01	3.8347
2010-07-01	4.1639
2010-10-01	4.0639
2011-01-01	4.2717
2011-04-01	5.4610
2011-07-01	6.7429
2011-10-01	7.7831
2012-01-01	3.5466
2012-04-01	3.5013
2012-07-01	2.3318
2012-10-01	2.3784
2013-01-01	2.3597
2013-04-01	4.1087
2013-07-01	4.2839
2013-10-01	3.5834
2014-01-01	3.4617
2014-04-01	3.4293
2014-07-01	2.2606
2014-10-01	2.1511
2015-01-01	1.9029
2015-04-01	1.9789