Quarter	Billions of US Dollars
1998-07-01	0.039
1998-10-01	0.039
1999-01-01	0.050
1999-04-01	0.050
1999-07-01	0.011
1999-10-01	0.011
2005-07-01	0.046
2005-10-01	0.046
2006-01-01	0.046
2006-04-01	0.046