Quarter	Billions of US Dollars
2004-10-01	0.00681
2005-01-01	0.00648
2005-04-01	0.12697
2005-07-01	0.12644
2005-10-01	0.12387
2006-01-01	0.12709
2006-04-01	0.38775
2006-07-01	0.38613
2006-10-01	0.39510
2007-01-01	0.39954
2007-04-01	0.40515
2007-07-01	0.42537
2007-10-01	0.44163
2008-01-01	0.47436
2008-04-01	0.31528
2008-07-01	0.28606
2008-10-01	0.27834
2009-01-01	0.26616
2009-04-01	0.28268
2009-07-01	0.29286
2009-10-01	0.28812
2010-01-01	0.26958
2010-04-01	0.24542
2010-07-01	0.27296
2010-10-01	0.26724
2011-01-01	0.28414