Quarter	Billions of US Dollars
1997-01-01	0.01090
2000-01-01	-0.01261
2001-04-01	0.13449
2001-10-01	0.11449
2002-10-01	0.43989
2004-04-01	-0.18061
2004-10-01	-0.04573
2005-04-01	-0.04571
2005-10-01	-0.04571
2006-04-01	-0.04572
2006-10-01	-0.20691
2007-04-01	-0.04572
2007-10-01	-0.21962