Quarter	Billions of US Dollars
2006-07-01	0.11965
2006-10-01	0.12292
2007-01-01	0.12283
2007-04-01	0.12229
2010-04-01	0.13873
2010-07-01	0.15416
2010-10-01	0.15964
2011-01-01	0.16397