Quarter	Billions of US Dollars
1993-07-01	0.09260
1994-10-01	0.09685
1995-01-01	0.10841
1995-04-01	0.10841
1995-07-01	0.10572
1996-01-01	0.10240
1996-04-01	0.10711
1996-07-01	0.10250
1996-10-01	0.10732
1997-01-01	0.00050
1997-04-01	0.00861
1997-07-01	0.08361
1997-10-01	0.07698
1998-01-01	0.07581
1998-04-01	0.08051
1998-07-01	0.00555
1998-10-01	0.00991
1999-01-01	0.00991
1999-04-01	0.00991
1999-07-01	0.00936
1999-10-01	0.00935
2000-01-01	0.00935
2000-04-01	0.00935
2000-07-01	0.00935
2000-10-01	0.00936
2001-01-01	0.00936
2001-04-01	0.00936
2001-07-01	0.12436
2001-10-01	0.12436
2002-01-01	0.12436
2002-04-01	0.12436
2002-07-01	0.00936
2002-10-01	0.00936
2003-01-01	0.00936
2003-04-01	0.00936
2003-07-01	0.02436
2003-10-01	0.02436
2004-01-01	0.03236
2004-04-01	0.03236
2004-07-01	0.02136
2004-10-01	0.02136
2005-01-01	0.40228
2005-04-01	0.37144
2005-07-01	0.36594
2005-10-01	0.36326
2006-01-01	0.00935
2006-04-01	0.01403
2006-07-01	0.01403
2006-10-01	0.00935
2007-01-01	0.00935
2007-04-01	0.00935
2007-07-01	0.00935
2007-10-01	0.00936
2008-01-01	0.00936
2008-04-01	0.00936
2008-07-01	0.00936
2008-10-01	0.00468
2009-01-01	0.00468
2009-04-01	0.00936
2009-07-01	0.00936
2009-10-01	0.16404
2010-01-01	0.16404
2010-04-01	0.25477
2010-07-01	0.28519
2010-10-01	0.14698
2011-01-01	0.13063
2011-04-01	0.38581
2011-07-01	0.29300
2011-10-01	0.16693
2012-01-01	0.17822
2012-04-01	0.20177
2012-07-01	0.19511
2012-10-01	0.16834
2013-01-01	0.17259
2013-04-01	0.21237
2013-07-01	0.18881
2013-10-01	0.14126
2014-01-01	0.14254
2014-04-01	0.29214
2014-07-01	0.29274
2014-10-01	0.27805
2015-01-01	0.57125
2015-04-01	0.55519