Quarter	Billions of US Dollars
1986-04-01	0.1000
1988-01-01	0.0752
1988-07-01	0.2682
1989-01-01	0.4560
1989-04-01	0.1134
1989-07-01	0.3274
1990-01-01	0.2912
1996-10-01	1.0250
1997-01-01	1.1635
1997-04-01	2.8600
1997-07-01	0.2500
1997-10-01	0.5955
1998-01-01	1.1165
1998-04-01	4.8397
1998-07-01	6.4401
2000-01-01	20.8689
2001-10-01	0.8237
2002-01-01	0.4000
2002-04-01	1.2500
2002-10-01	1.7550
2003-01-01	2.0500
2003-04-01	0.4750
2003-10-01	1.0550
2004-01-01	0.5800
2004-04-01	0.9250
2004-07-01	1.2049
2004-10-01	0.4500
2005-01-01	1.6000
2005-04-01	0.2300
2005-07-01	1.2100
2005-10-01	0.0750
2006-01-01	0.4527
2006-04-01	1.7500
2006-07-01	1.6079
2006-10-01	4.8212
2007-01-01	6.1310
2007-04-01	5.1652
2007-07-01	0.6198
2007-10-01	0.2744
2008-01-01	0.3284
2008-04-01	3.1748
2008-07-01	4.4380
2009-04-01	2.6883
2009-07-01	0.6878
2009-10-01	0.9732
2010-01-01	2.2750
2010-04-01	6.9000
2010-07-01	2.0011
2010-10-01	2.4160
2011-01-01	5.7844
2011-04-01	4.1893
2011-07-01	1.4500
2011-10-01	1.3996
2012-01-01	14.6275
2012-04-01	5.8020
2012-07-01	11.4199
2012-10-01	12.2284
2013-01-01	8.4681
2013-04-01	8.3773
2013-07-01	7.4065
2013-10-01	5.5508
2014-01-01	2.6722
2014-04-01	2.6801
2014-07-01	0.7773
2014-10-01	0.8067
2015-01-01	0.0773
2015-04-01	0.0552