Quarter	Billions of US Dollars
1996-10-01	0.2000
1997-10-01	0.3500
1999-10-01	0.1000
2000-04-01	0.3500
2002-10-01	-0.3500
2004-10-01	-0.3000
2007-04-01	-0.3500
2014-10-01	3.2051
2015-01-01	-0.1512
2015-04-01	0.0937