Quarter	Billions of US Dollars
1997-10-01	0.10000
1998-01-01	0.11073
1998-04-01	0.12673
1998-07-01	0.13873
1998-10-01	0.16616
1999-01-01	0.14945
1999-04-01	0.08131
1999-07-01	0.08103
1999-10-01	0.05296
2000-01-01	0.04386
2000-04-01	0.04187
2000-07-01	0.02965
2000-10-01	0.05908
2001-01-01	0.08872
2001-04-01	0.10445
2001-07-01	0.11247
2001-10-01	0.08211
2002-01-01	0.03766
2002-04-01	0.21945
2002-07-01	0.21692
2002-10-01	0.23071
2003-01-01	0.23969
2003-04-01	0.00500
2003-07-01	0.00500
2003-10-01	0.37995
2004-01-01	0.34727
2004-04-01	0.62582
2004-07-01	0.71995
2004-10-01	0.42640
2005-01-01	1.09104
2005-04-01	0.60623
2005-07-01	0.47188
2005-10-01	0.42759
2006-01-01	0.09902
2006-04-01	0.16841
2006-07-01	0.16753
2006-10-01	0.17540
2007-01-01	0.06659
2007-04-01	0.01351
2007-07-01	0.01418
2007-10-01	0.01472
2008-01-01	0.09487
2008-04-01	0.07882
2008-07-01	0.07152
2008-10-01	1.11336
2009-01-01	0.99810
2009-04-01	1.06005
2009-07-01	1.09823