Quarter	Billions of US Dollars
1993-07-01	0.09510
1997-04-01	0.05000
1997-07-01	0.15000
1997-10-01	0.15000
1998-01-01	0.10000
1998-04-01	0.23500
1998-07-01	0.18000
1998-10-01	0.28500
1999-01-01	0.28500
1999-04-01	0.18700
1999-07-01	0.15600
1999-10-01	0.01000
2000-01-01	0.01000
2000-04-01	0.17590
2000-07-01	0.17418
2000-10-01	0.81463
2001-01-01	0.81404
2001-04-01	0.64983
2001-07-01	1.10833
2001-10-01	0.62018
2002-01-01	0.69633
2002-04-01	0.77980
2002-07-01	1.16641
2002-10-01	1.48082
2003-01-01	1.66895
2003-04-01	2.30295
2003-07-01	2.25841
2003-10-01	2.02190
2004-01-01	1.93195
2004-04-01	1.24227
2004-07-01	1.06509
2004-10-01	0.80000
2005-01-01	0.68938
2005-04-01	0.81619
2005-07-01	0.23811
2005-10-01	1.03305
2006-01-01	1.03149
2006-04-01	1.66457
2006-07-01	1.66228
2006-10-01	0.94611
2007-01-01	0.83500
2007-04-01	0.08115
2007-07-01	0.08692
2008-01-01	0.16983
2008-04-01	0.15977
2008-07-01	0.56299
2008-10-01	0.58733
2009-01-01	0.40000
2009-04-01	0.41450
2009-07-01	0.01450
2009-10-01	0.01450
2010-01-01	0.01450
2010-04-01	0.60000
2010-07-01	0.60000
2010-10-01	0.60000
2011-01-01	0.60000
2011-04-01	0.56134
2011-07-01	0.53065
2011-10-01	0.79007
2012-01-01	1.00772
2012-04-01	0.46085
2012-07-01	0.47047
2012-10-01	0.18486
2013-07-01	0.70000
2013-10-01	0.70000
2014-01-01	0.70000
2014-04-01	0.70000
2014-07-01	0.62500
2014-10-01	0.62500
2015-01-01	0.62500
2015-04-01	0.62500