Quarter	Billions of US Dollars
1998-04-01	0.00020
1998-10-01	0.04577
2002-07-01	0.00596
2004-01-01	0.04711
2005-01-01	0.03592
2006-01-01	0.06747
2006-04-01	0.11939
2006-07-01	0.02230
2006-10-01	0.06924
2007-04-01	0.00387
2007-07-01	0.01470
2007-10-01	1.32559
2008-01-01	0.02036
2008-04-01	0.03179
2008-07-01	0.05226
2008-10-01	0.11582
2009-01-01	0.04687
2009-04-01	0.10634
2009-07-01	0.00090
2009-10-01	0.01886
2010-01-01	0.00452
2010-07-01	0.00263
2010-10-01	0.00133
2011-01-01	0.02918
2011-04-01	0.00959
2011-07-01	0.03181
2011-10-01	0.02899
2012-01-01	0.01580
2012-04-01	2.40271
2012-07-01	0.28357
2012-10-01	0.20405
2013-01-01	0.05412
2013-04-01	0.02920
2013-07-01	0.01978
2013-10-01	0.01346
2014-01-01	0.06830
2014-04-01	0.07200
2014-07-01	0.03192
2014-10-01	0.13997
2015-01-01	0.02299
2015-04-01	0.01955