Quarter	Billions of US Dollars
1999-01-01	0.01121
1999-04-01	0.01115
1999-07-01	0.01263
1999-10-01	0.01321
2003-04-01	0.17141
2003-07-01	0.17478
2003-10-01	0.23518
2004-01-01	0.22909
2004-04-01	0.09144
2004-07-01	0.09144
2004-10-01	0.09142
2005-01-01	0.09142
2005-04-01	0.09143
2005-07-01	0.09143
2005-10-01	0.23889
2006-01-01	0.24273
2006-04-01	0.25034
2006-07-01	0.24968
2006-10-01	0.24946
2007-01-01	0.25124
2007-04-01	0.20776
2007-07-01	0.21585