Quarter	Billions of US Dollars
2001-04-01	0.005678
2002-04-01	-0.005745
2008-01-01	0.006387
2008-07-01	0.006371
2009-01-01	-0.005582
2009-07-01	0.001830
2009-10-01	0.029344
2010-04-01	-0.005171
2010-10-01	-0.029000