Quarter	Billions of US Dollars
2005-04-01	0.01791
2005-07-01	0.04086
2005-10-01	0.05649
2006-01-01	0.05387
2006-04-01	0.12042
2006-07-01	0.09502
2006-10-01	0.23078
2007-01-01	0.21578
2007-04-01	0.20984
2007-07-01	0.19535
2007-10-01	0.09604
2008-01-01	0.07010
2008-04-01	0.00239
2008-07-01	0.00000
2008-10-01	0.00000
2009-10-01	0.01622
2010-01-01	0.02015
2010-07-01	0.19120
2010-10-01	0.22552
2011-01-01	0.18644
2012-07-01	0.00572
2012-10-01	0.05217
2013-01-01	0.01236
2013-04-01	0.01524
2013-07-01	0.00715
2015-01-01	0.00263
2015-04-01	0.00842