Quarter	Billions of US Dollars
1993-07-01	1.4954
1993-10-01	1.4774
1994-01-01	1.3276
1994-04-01	0.9784
1994-07-01	0.9091
1994-10-01	1.3042
1995-01-01	1.0670
1995-04-01	1.0782
1995-07-01	1.5356
1995-10-01	1.8060
1996-01-01	1.8234
1996-04-01	2.4756
1996-07-01	2.0860
1996-10-01	1.3181
1997-01-01	1.7718
1997-04-01	1.3213
1997-07-01	0.8491
1997-10-01	0.9972
1998-01-01	1.0273
1998-04-01	1.1837
1998-07-01	1.3179
1998-10-01	1.7308
1999-01-01	0.8148
1999-04-01	0.9501
1999-07-01	1.1474
1999-10-01	1.0346
2000-01-01	0.9442
2000-04-01	1.0927
2000-07-01	0.7506
2000-10-01	1.5708
2001-01-01	2.5110
2001-04-01	2.4397
2001-07-01	3.2781
2001-10-01	2.3481
2002-01-01	1.8202
2002-04-01	2.2714
2002-07-01	1.7505
2002-10-01	1.8721
2003-01-01	1.1684
2003-04-01	2.4292
2003-07-01	3.3348
2003-10-01	4.9768
2004-01-01	5.1328
2004-04-01	5.3797
2004-07-01	6.4390
2004-10-01	10.3694
2005-01-01	12.9430
2005-04-01	14.5236
2005-07-01	11.9245
2005-10-01	8.1365
2006-01-01	6.7663
2006-04-01	3.3715
2006-07-01	3.5802
2006-10-01	3.0950
2007-01-01	0.9989
2007-04-01	2.0258
2007-07-01	1.6772
2007-10-01	4.5118
2008-01-01	4.7561
2008-04-01	3.9578
2008-07-01	4.8929
2008-10-01	2.2619
2009-01-01	2.0818
2009-04-01	3.6414
2009-07-01	2.0907
2009-10-01	2.9544
2010-01-01	3.7741
2010-04-01	7.6080
2010-07-01	10.3989
2010-10-01	11.5381
2011-01-01	12.8801
2011-04-01	6.5435
2011-07-01	5.3003
2011-10-01	4.3828
2012-01-01	3.7227
2012-04-01	6.0523
2012-07-01	5.8973
2012-10-01	5.3352
2013-01-01	8.3969
2013-04-01	12.6593
2013-07-01	13.7195
2013-10-01	16.6029
2014-01-01	15.6728
2014-04-01	9.4004
2014-07-01	7.9940
2014-10-01	8.3390
2015-01-01	13.6909
2015-04-01	14.8216