Quarter	Billions of US Dollars
1993-07-01	0.0154
1993-10-01	0.0145
1994-01-01	0.0150
1994-04-01	0.0157
1994-07-01	0.0161
1994-10-01	0.0161
1995-01-01	0.0181
1996-07-01	0.0458
1996-10-01	0.0450
1997-01-01	0.0417
1997-04-01	0.0401
1997-07-01	0.0396
1997-10-01	0.0391
1998-01-01	0.0379
1998-04-01	0.0387
1998-07-01	0.0418
1998-10-01	0.0418
1999-01-01	0.0384
1999-04-01	0.0370
1999-07-01	0.0382
1999-10-01	0.0360
2000-01-01	0.0342
2000-04-01	0.0342
2000-07-01	0.0314
2000-10-01	0.0333
2001-01-01	0.0316
2001-04-01	0.0304
2004-04-01	0.2127
2004-07-01	0.2172
2004-10-01	0.2384
2005-01-01	0.2269
2005-04-01	0.2116
2005-07-01	0.2107
2005-10-01	0.2064
2006-01-01	0.2118
2006-04-01	0.2225
2006-07-01	0.5116
2006-10-01	1.2799
2007-01-01	1.5286
2007-04-01	1.5356
2007-07-01	1.6011
2007-10-01	2.3650
2008-01-01	2.5481
2008-04-01	2.5554
2008-07-01	3.3203
2008-10-01	3.2720
2009-01-01	3.1084
2009-04-01	4.2876
2009-07-01	4.5515
2009-10-01	5.9692
2010-01-01	5.8370
2010-04-01	6.9358
2010-07-01	7.6876
2010-10-01	7.8633
2011-01-01	8.4460
2011-04-01	9.6412
2011-07-01	9.1059
2011-10-01	8.6795
2012-01-01	8.8939
2012-04-01	9.8291
2012-07-01	10.6812
2012-10-01	10.7253
2013-01-01	10.4213
2013-04-01	12.5812
2013-07-01	12.9564
2013-10-01	12.4919
2014-01-01	13.6353
2014-04-01	12.9091
2014-07-01	11.7147
2014-10-01	11.4181
2015-01-01	10.4060
2015-04-01	10.2223