Quarter	Billions of US Dollars
1993-07-01	0.5452
1993-10-01	0.8837
1994-01-01	0.8910
1994-04-01	1.3614
1994-07-01	1.3672
1994-10-01	1.3646
1995-01-01	0.8342
1995-04-01	0.8327
1995-07-01	0.8336
1995-10-01	0.9668
1996-01-01	1.1367
1996-04-01	1.2564
1996-07-01	1.3266
1996-10-01	1.9534
1997-01-01	2.4299
1997-04-01	2.5156
1997-07-01	2.4563
1997-10-01	2.3948
1998-01-01	2.1015
1998-04-01	2.5925
1998-07-01	2.5451
1998-10-01	2.4048
1999-01-01	2.3220
1999-04-01	2.4866
1999-07-01	1.1777
1999-10-01	0.9286
2000-01-01	1.7176
2000-04-01	0.9280
2000-07-01	0.9275
2000-10-01	0.6174
2001-01-01	0.5524
2001-04-01	0.4027
2001-07-01	0.4032
2001-10-01	0.4016
2002-01-01	0.3250
2002-04-01	0.3100
2002-07-01	0.3100
2002-10-01	0.3100
2003-01-01	0.3100
2003-04-01	0.1600
2003-07-01	0.1600
2003-10-01	0.1600
2004-01-01	0.0600
2004-04-01	0.0600
2004-07-01	0.0600
2004-10-01	0.0600
2005-01-01	0.0600
2005-04-01	0.0600
2005-07-01	0.0600
2005-10-01	0.2610
2006-01-01	0.2610
2006-04-01	0.2010
2006-07-01	0.2010
2006-10-01	0.2010
2007-01-01	0.2010
2007-04-01	1.2260
2007-07-01	1.2260
2007-10-01	1.3760
2008-01-01	1.3760
2008-04-01	1.0760
2008-07-01	1.0760
2008-10-01	0.9250
2009-01-01	0.9250
2009-04-01	0.9250
2009-07-01	1.4000
2009-10-01	2.8150
2010-01-01	3.2900
2010-04-01	3.5400
2010-07-01	3.5400
2010-10-01	3.4900
2011-01-01	3.0550
2011-04-01	4.5550
2011-07-01	4.5550
2011-10-01	4.5550
2012-01-01	4.5550
2012-04-01	6.7300
2012-07-01	6.9257
2012-10-01	7.9070
2013-01-01	8.7538
2013-04-01	10.1105
2013-07-01	10.1035
2013-10-01	10.1006
2014-01-01	10.1022
2014-04-01	12.8386
2014-07-01	12.3546
2014-10-01	12.9433
2015-01-01	12.8714
2015-04-01	14.3164