Quarter	Billions of US Dollars
1998-04-01	0.15633
2006-04-01	0.01164
2006-07-01	0.01262
2006-10-01	0.02909
2007-01-01	0.03752
2007-04-01	0.03656
2007-07-01	0.04483
2007-10-01	0.04202
2008-01-01	0.10727
2008-04-01	0.03582
2008-07-01	0.04280
2008-10-01	0.00940
2009-01-01	0.00879
2009-04-01	0.01519
2009-07-01	0.01203
2009-10-01	0.03977
2010-01-01	0.00261
2010-04-01	0.02395
2010-07-01	0.01634
2010-10-01	0.06777
2011-01-01	0.07367
2011-04-01	0.03024
2011-07-01	0.00496
2011-10-01	0.01062
2012-01-01	0.00283
2012-04-01	0.10217
2012-07-01	0.00022
2013-01-01	0.00275
2013-04-01	0.11847
2013-10-01	0.00209
2014-01-01	0.00143
2014-07-01	0.00370