Quarter	Billions of US Dollars
1990-04-01	0.15000
1996-10-01	0.08539
1997-04-01	0.30000
1998-01-01	0.10000
1998-07-01	0.39120
1999-04-01	0.29589
1999-07-01	0.04209
1999-10-01	0.00071
2000-04-01	0.01724
2000-07-01	0.00047
2000-10-01	0.00630
2001-04-01	0.23364
2001-07-01	0.08445
2001-10-01	0.17040
2002-01-01	0.48194
2002-04-01	0.00072
2002-07-01	0.00229
2003-01-01	0.00330
2003-04-01	0.00018
2003-07-01	0.00378
2003-10-01	0.67239
2004-01-01	0.00308
2004-07-01	0.98615
2004-10-01	0.03517
2005-04-01	0.62768
2005-07-01	0.02373
2006-01-01	0.02823
2006-04-01	1.21569
2006-07-01	0.13819
2006-10-01	0.51950
2007-01-01	0.21000
2007-04-01	3.09017
2007-07-01	0.11760
2007-10-01	0.05000
2008-04-01	2.27970
2008-07-01	0.13000
2009-04-01	3.62368
2009-07-01	0.71517
2009-10-01	0.03698
2010-01-01	1.99709
2010-04-01	0.35414
2010-07-01	0.00010
2010-10-01	1.40839
2011-01-01	0.49379
2011-04-01	1.95225
2011-07-01	1.83131
2011-10-01	1.61720
2012-04-01	0.57109
2012-10-01	5.23104
2013-01-01	0.27500
2013-04-01	2.51289
2013-10-01	1.29154
2014-01-01	2.97219
2014-04-01	1.16550
2014-10-01	0.12472
2015-01-01	0.05946
2015-04-01	1.57300