Quarter	Billions of US Dollars
1997-10-01	0.74012
1998-01-01	0.74012
1998-04-01	0.74012
1998-07-01	0.74012
2001-01-01	0.69043
2001-04-01	0.70863
2001-07-01	0.70863
2001-10-01	0.70863
2002-01-01	0.95445
2002-04-01	0.93625
2002-07-01	0.97266
2002-10-01	0.96490
2003-01-01	0.94670
2003-04-01	0.94670
2003-07-01	0.91029
2004-01-01	0.06667
2004-04-01	0.06667
2004-07-01	0.06667
2004-10-01	0.06667
2005-01-01	0.10000
2005-04-01	0.10000
2005-07-01	0.10000
2005-10-01	0.10000
2006-01-01	0.70287
2006-04-01	0.80453
2006-07-01	1.78683
2006-10-01	1.78683
2007-01-01	2.52572
2007-04-01	2.42406
2007-07-01	1.44176
2007-10-01	1.44176
2009-04-01	0.74029
2009-07-01	0.75857
2009-10-01	0.75006
2010-01-01	0.71675
2011-01-01	0.01290
2011-04-01	0.01290
2011-07-01	0.01290
2011-10-01	0.01290
2013-10-01	0.51615
2014-01-01	1.03969
2014-04-01	1.03591
2014-07-01	1.00466
2014-10-01	0.52362
2015-04-01	1.22266