Quarter	Billions of US Dollars
2001-04-01	0.15000
2001-07-01	0.15000
2001-10-01	0.15000
2002-01-01	0.15000
2007-01-01	0.10000
2007-04-01	0.10000
2007-07-01	0.10000
2007-10-01	0.10000
2008-10-01	0.04515
2009-01-01	0.04317
2009-04-01	0.04585
2009-07-01	0.04750
2012-01-01	0.35735
2012-04-01	0.33686
2012-07-01	0.34596
2012-10-01	0.35302
2015-04-01	0.16500