Quarter	Billions of US Dollars
1993-07-01	11.8807
1993-10-01	10.9937
1994-01-01	11.5421
1994-04-01	10.2196
1994-07-01	11.2682
1994-10-01	13.9494
1995-01-01	15.1128
1995-04-01	14.7334
1995-07-01	15.7749
1995-10-01	14.3889
1996-01-01	13.0573
1996-04-01	13.9283
1996-07-01	14.4775
1996-10-01	14.6068
1997-01-01	15.2710
1997-04-01	16.6375
1997-07-01	15.0810
1997-10-01	13.1648
1998-01-01	12.2062
1998-04-01	11.2128
1998-07-01	11.2987
1998-10-01	12.4520
1999-01-01	12.5398
1999-04-01	12.0008
1999-07-01	11.4037
1999-10-01	9.9811
2000-01-01	9.1419
2000-04-01	8.0179
2000-07-01	7.9088
2000-10-01	8.1151
2001-01-01	7.4332
2001-04-01	6.6921
2001-07-01	7.1558
2001-10-01	6.2813
2002-01-01	6.9695
2002-04-01	6.4097
2002-07-01	6.2425
2002-10-01	7.4308
2003-01-01	7.2359
2003-04-01	6.9641
2003-07-01	7.1735
2003-10-01	8.5556
2004-01-01	8.5237
2004-04-01	6.8089
2004-07-01	8.5863
2004-10-01	8.9941
2005-01-01	9.6562
2005-04-01	9.0024
2005-07-01	7.4228
2005-10-01	8.9062
2006-01-01	6.7282
2006-04-01	7.3983
2006-07-01	7.0982
2006-10-01	8.4641
2007-01-01	8.4570
2007-04-01	8.6918
2007-07-01	11.0861
2007-10-01	10.6729
2008-01-01	9.5807
2008-04-01	9.1597
2008-07-01	6.9292
2008-10-01	9.3430
2009-01-01	8.2346
2009-04-01	10.3917
2009-07-01	12.3771
2009-10-01	10.2105
2010-01-01	9.6078
2010-04-01	9.7241
2010-07-01	10.4503
2010-10-01	10.2435
2011-01-01	9.9688
2011-04-01	13.2636
2011-07-01	13.5308
2011-10-01	13.3981
2012-01-01	12.1308
2012-04-01	9.4365
2012-07-01	8.5693
2012-10-01	11.6710
2013-01-01	10.3298
2013-04-01	7.3815
2013-07-01	9.3633
2013-10-01	10.1325
2014-01-01	8.1891
2014-04-01	6.2262
2014-07-01	4.3576
2014-10-01	4.3007
2015-01-01	4.8534
2015-04-01	3.2910