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	0.2418
1999-01-01	0.2384
1999-04-01	0.2370
1999-07-01	0.2382
1999-10-01	0.2360
2000-01-01	0.2342
2000-04-01	0.2342
2000-07-01	0.2314
2000-10-01	0.2333
2001-01-01	0.2316
2001-04-01	0.2304
2001-07-01	0.2000
2001-10-01	0.2000
2002-01-01	0.2000
2002-04-01	0.2000
2002-07-01	0.2000
2002-10-01	0.2000
2003-01-01	0.2000
2003-04-01	0.2000
2003-07-01	0.2000
2003-10-01	0.2000
2004-01-01	0.2000
2004-04-01	0.4127
2004-07-01	0.4172
2004-10-01	0.8811
2005-01-01	0.8482
2005-04-01	0.8046
2005-07-01	0.4127
2005-10-01	0.2085
2006-01-01	0.2138
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	7.4358
2010-07-01	8.1876
2010-10-01	8.5904
2011-01-01	9.1875
2011-04-01	10.3869
2011-07-01	9.8355
2011-10-01	9.3995
2012-01-01	9.6210
2012-04-01	10.5431
2012-07-01	11.4916
2012-10-01	11.5420
2013-01-01	11.2286
2013-04-01	13.3951
2013-07-01	13.7805
2013-10-01	13.3228
2014-01-01	14.4662
2014-04-01	13.7369
2014-07-01	12.5167
2014-10-01	12.0031
2015-01-01	10.9813
2015-04-01	10.3006