Quarter	Billions of US Dollars
1994-01-01	0.00003
1994-04-01	0.00004
1994-07-01	0.00004
1994-10-01	0.00004
1995-01-01	0.00004
1995-04-01	0.00004
1995-07-01	0.00004
1995-10-01	0.00004
1996-01-01	0.00004
1996-04-01	0.00004
1996-07-01	0.00004
1996-10-01	0.00004
1997-04-01	0.25000
1997-07-01	0.25000
1997-10-01	0.25000
1998-01-01	0.25000
1998-04-01	0.25000
1998-07-01	0.25000
1998-10-01	0.25000
1999-01-01	0.25000
1999-04-01	0.25000
1999-07-01	0.25000
1999-10-01	0.25000
2000-01-01	0.25000
2000-04-01	0.25000
2000-07-01	0.25000
2000-10-01	0.25000
2001-01-01	0.25000
2001-04-01	0.25000
2001-07-01	0.25000
2001-10-01	0.25000
2002-01-01	0.25000
2002-04-01	0.35000
2002-07-01	0.35000
2002-10-01	0.35000
2003-01-01	0.35000
2003-04-01	0.35000
2003-07-01	0.35000
2003-10-01	0.50000
2004-01-01	0.50000
2004-04-01	0.50000
2004-07-01	0.50000
2004-10-01	0.50000
2005-01-01	0.65000
2005-04-01	0.65000
2005-07-01	0.65000
2005-10-01	0.65000
2006-01-01	0.65000
2006-04-01	0.65000
2006-07-01	0.65000
2006-10-01	0.65000
2007-01-01	0.65000
2007-04-01	1.07959
2007-07-01	1.16194
2007-10-01	1.32107
2008-01-01	1.36410
2008-04-01	2.22911
2008-07-01	2.70903
2008-10-01	2.51695
2009-01-01	2.65019
2009-04-01	2.55262
2009-07-01	2.68895
2009-10-01	2.86837
2010-01-01	2.74879
2010-04-01	2.81109
2010-07-01	3.50771
2010-10-01	3.58585
2011-01-01	3.76561
2011-04-01	3.41174
2011-07-01	2.90691
2011-10-01	2.90137
2012-01-01	3.09381
2012-04-01	3.26565
2012-07-01	3.23564
2012-10-01	4.03917
2013-01-01	3.91964
2013-04-01	4.74527
2013-07-01	4.91570
2013-10-01	5.03340
2014-01-01	5.01549
2014-04-01	4.58726
2014-07-01	4.91225
2014-10-01	4.75718
2015-01-01	4.25563
2015-04-01	4.35652