Quarter	Billions of US Dollars
1998-04-01	0.10000
2002-01-01	0.10903
2002-04-01	0.25000
2002-10-01	0.05000
2003-04-01	0.72500
2004-01-01	0.30000
2004-04-01	0.40000
2004-10-01	2.07500
2005-01-01	0.50000
2005-07-01	0.30000
2005-10-01	0.60000
2006-01-01	0.97500
2006-04-01	1.85000
2006-07-01	1.57323
2006-10-01	1.34430
2007-01-01	0.60261
2007-04-01	2.90646
2007-07-01	-0.02948
2007-10-01	0.81297
2008-01-01	0.08467
2008-04-01	0.58753
2008-07-01	3.97200
2009-01-01	-0.34605
2009-04-01	-0.10000
2009-07-01	1.70240
2009-10-01	0.54760
2010-01-01	-0.12500
2010-04-01	0.01823
2010-07-01	-1.05000
2010-10-01	0.95000
2011-01-01	-0.30000
2011-04-01	-0.50000
2011-07-01	-0.17058
2011-10-01	-0.61234
2012-07-01	0.80000
2012-10-01	-0.29023
2013-04-01	-0.30000
2013-07-01	-2.27750
2013-10-01	-0.50000
2014-01-01	-0.50000
2014-04-01	-0.67969
2014-07-01	-0.30600
2014-10-01	-0.97110
2015-01-01	-2.80300
2015-04-01	0.04900