Quarter	Billions of US Dollars
1998-10-01	0.15000
1999-01-01	0.56902
1999-04-01	0.58062
1999-07-01	0.58062
1999-10-01	0.43062
2000-01-01	0.01160
2000-10-01	0.15000
2001-01-01	0.16938
2001-04-01	0.16938
2001-07-01	0.16938
2001-10-01	0.16574
2002-01-01	0.14636
2002-04-01	0.14636
2002-07-01	0.14636
2002-10-01	0.14637
2003-01-01	0.14637
2003-04-01	0.14637
2003-07-01	0.14637
2003-10-01	0.14637
2004-01-01	0.14637
2004-04-01	0.14637
2004-07-01	0.14637
2004-10-01	0.14636
2005-01-01	0.14636
2005-04-01	0.14636
2005-07-01	0.14636
2008-01-01	0.50000
2008-04-01	0.50000
2008-07-01	0.50000
2008-10-01	0.50000
2015-01-01	0.50000
2015-04-01	0.50000