Quarter	Billions of US Dollars
2005-01-01	0.09466
2005-04-01	0.09889
2005-07-01	0.03465
2005-10-01	0.03465
2006-01-01	0.03465
2006-04-01	0.03465
2007-04-01	0.00990
2007-07-01	0.06931
2007-10-01	0.09901
2008-01-01	0.22772
2008-04-01	0.23201
2008-07-01	0.23143
2008-10-01	0.07468
2009-01-01	0.03571
2010-04-01	0.00885
2010-07-01	0.01625
2010-10-01	0.08390
2011-01-01	0.08392
2011-04-01	0.07501
2011-07-01	0.06766