Quarter	Billions of US Dollars
2001-10-01	0.01030
2002-04-01	-0.01056
2003-01-01	0.00859
2003-10-01	-0.00238
2004-01-01	-0.00750
2006-01-01	0.01623
2007-01-01	-0.01769
2009-10-01	0.45239
2014-04-01	0.35891