Quarter	Billions of US Dollars
1993-07-01	1.4590
1993-10-01	1.3641
1994-01-01	1.7381
1994-04-01	1.6058
1994-07-01	2.6642
1994-10-01	2.2555
1995-01-01	3.3021
1995-04-01	3.9775
1995-07-01	3.4833
1995-10-01	4.9400
1996-01-01	4.1902
1996-04-01	4.6957
1996-07-01	5.1744
1996-10-01	5.6707
1997-01-01	4.9141
1997-04-01	4.8506
1997-07-01	5.2782
1997-10-01	5.7002
1998-01-01	5.8249
1998-04-01	5.0781
1998-07-01	4.6248
1998-10-01	5.4680
1999-01-01	5.2115
1999-04-01	3.3178
1999-07-01	2.6265
1999-10-01	2.9632
2000-01-01	4.1270
2000-04-01	3.2275
2000-07-01	3.9094
2000-10-01	3.2538
2001-01-01	5.4409
2001-04-01	5.2363
2001-07-01	6.4560
2001-10-01	6.6616
2002-01-01	6.4813
2002-04-01	6.9400
2002-07-01	8.9164
2002-10-01	10.1889
2003-01-01	12.4473
2003-04-01	12.1646
2003-07-01	12.1287
2003-10-01	14.0883
2004-01-01	13.2697
2004-04-01	10.6770
2004-07-01	11.6562
2004-10-01	8.8792
2005-01-01	9.7075
2005-04-01	11.3162
2005-07-01	11.5329
2005-10-01	10.2233
2006-01-01	10.4054
2006-04-01	11.5422
2006-07-01	11.0676
2006-10-01	10.9481
2007-01-01	11.8722
2007-04-01	12.4254
2007-07-01	12.5765
2007-10-01	14.8239
2008-01-01	15.0343
2008-04-01	15.0947
2008-07-01	16.5267
2008-10-01	12.2099
2009-01-01	13.1877
2009-04-01	9.8043
2009-07-01	12.8366
2009-10-01	11.1516
2010-01-01	10.1137
2010-04-01	8.6148
2010-07-01	7.7503
2010-10-01	7.3451
2011-01-01	7.7304
2011-04-01	9.9874
2011-07-01	7.3472
2011-10-01	7.6306
2012-01-01	11.8038
2012-04-01	6.9775
2012-07-01	5.7939
2012-10-01	4.3473
2013-01-01	3.8528
2013-04-01	3.7382
2013-07-01	3.1024
2013-10-01	2.0399
2014-01-01	1.7519
2014-04-01	1.8413
2014-07-01	1.1040
2014-10-01	0.8640
2015-01-01	0.9331
2015-04-01	2.0673