Quarter	Billions of US Dollars
1993-07-01	1.7709
1993-10-01	1.6290
1994-01-01	2.9077
1994-04-01	2.8643
1994-07-01	2.8735
1994-10-01	2.2315
1995-01-01	1.3833
1995-04-01	2.0003
1995-07-01	3.6089
1995-10-01	3.8167
1996-01-01	3.5400
1996-04-01	2.8764
1996-07-01	1.3012
1996-10-01	2.1174
1997-01-01	2.4915
1997-04-01	3.0731
1997-07-01	3.7285
1997-10-01	3.0781
1998-01-01	3.3322
1998-04-01	2.4263
1998-07-01	1.8681
1998-10-01	2.3653
1999-01-01	1.6741
1999-04-01	1.7702
1999-07-01	1.9101
1999-10-01	1.5948
2000-01-01	1.8781
2000-04-01	2.4080
2000-07-01	2.2118
2000-10-01	1.9608
2001-01-01	2.7639
2001-04-01	3.7115
2001-07-01	3.8382
2001-10-01	3.8404
2002-01-01	3.3473
2002-04-01	3.0465
2002-07-01	3.0999
2002-10-01	3.5397
2003-01-01	3.7036
2003-04-01	4.9838
2003-07-01	4.2382
2003-10-01	4.9029
2004-01-01	5.2604
2004-04-01	3.3466
2004-07-01	3.1121
2004-10-01	1.9330
2005-01-01	0.9337
2005-04-01	0.7256
2005-07-01	2.1362
2005-10-01	2.0861
2006-01-01	2.3774
2006-04-01	2.4627
2006-07-01	2.8327
2006-10-01	2.8884
2007-01-01	2.8247
2007-04-01	2.6466
2007-07-01	2.2878
2007-10-01	4.7001
2008-01-01	5.8039
2008-04-01	4.7376
2008-07-01	4.7278
2008-10-01	2.4802
2009-01-01	2.0299
2009-04-01	1.6996
2009-07-01	1.3917
2009-10-01	2.2983
2010-01-01	3.4369
2010-04-01	2.9502
2010-07-01	3.4347
2010-10-01	0.4832
2011-01-01	0.8399
2011-04-01	1.9641
2011-07-01	1.7140
2011-10-01	2.1320
2012-01-01	0.6286
2012-04-01	0.6386
2012-07-01	4.4162
2012-10-01	4.3891
2013-01-01	5.6993
2013-04-01	7.0154
2013-07-01	4.9643
2013-10-01	6.2353
2014-01-01	10.2945
2014-04-01	9.4164
2014-07-01	9.8371
2014-10-01	8.5611
2015-01-01	4.2925
2015-04-01	4.1054