Quarter	Billions of US Dollars
1997-10-01	0.10000
1998-01-01	0.01073
1998-04-01	0.01600
1998-07-01	0.01200
1999-01-01	-0.03673
1999-04-01	-0.09000
1999-07-01	-0.01200
2003-10-01	0.35377
2004-01-01	-0.06501
2004-04-01	0.21049
2004-07-01	0.06816
2004-10-01	-0.38152
2005-01-01	0.30635
2005-04-01	-0.35250
2005-07-01	-0.12193
2006-01-01	-0.03606