Quarter	Billions of US Dollars
2000-10-01	0.00000
2001-01-01	0.00000
2001-04-01	0.00000
2001-07-01	0.20880
2001-10-01	0.20153
2002-01-01	0.19949
2002-04-01	0.22810
2003-04-01	0.15849
2003-07-01	0.16161
2003-10-01	0.17518
2004-01-01	0.16955
2007-07-01	0.56716
2007-10-01	0.58884
2008-01-01	0.63248
2008-04-01	0.63056