Quarter	Billions of US Dollars
1993-07-01	0.02000
1994-01-01	0.14626
1994-04-01	0.21535
1994-07-01	0.45234
1994-10-01	0.54353
1995-01-01	0.25070
1995-04-01	0.07529
1995-07-01	0.06705
1996-04-01	0.16562
1996-07-01	0.25087
1996-10-01	0.26264
1997-01-01	0.27088
1997-04-01	0.28485
1997-07-01	0.25157
1997-10-01	0.22957
1998-01-01	0.36871
1998-04-01	0.40007
1998-07-01	0.39209
1998-10-01	0.75238
1999-01-01	1.24664
1999-04-01	1.15536
1999-07-01	1.11106
1999-10-01	1.66075
2000-01-01	1.07782
2000-04-01	1.02623
2000-07-01	1.00251
2000-10-01	0.25423
2001-01-01	0.24690
2001-04-01	0.51704
2001-07-01	0.58871
2001-10-01	0.44065
2002-01-01	0.37353
2002-04-01	0.61287
2002-07-01	0.44474
2002-10-01	0.72887
2003-01-01	0.53097
2003-04-01	0.48395
2003-07-01	0.57434
2003-10-01	0.56457
2004-01-01	0.50633
2004-04-01	0.38233
2004-07-01	0.63775
2004-10-01	0.42596
2005-01-01	0.27048
2005-04-01	0.25362
2005-07-01	0.65295
2005-10-01	0.73159
2006-01-01	0.74996
2006-04-01	0.84287
2006-07-01	0.11300
2006-10-01	0.11775
2007-01-01	0.11273
2007-04-01	0.08971
2007-07-01	0.05727
2007-10-01	0.07036
2008-01-01	0.06267
2008-04-01	0.05261
2008-07-01	0.03511
2008-10-01	0.01600
2009-01-01	0.01780
2009-04-01	0.02966
2009-07-01	0.02464
2009-10-01	0.02110
2010-01-01	0.00423
2011-01-01	0.00081
2011-04-01	0.17270
2011-07-01	0.16467
2011-10-01	0.15031
2012-01-01	0.15325
2012-04-01	0.00106
2012-10-01	0.00073
2013-01-01	0.00379
2013-04-01	0.01091
2013-07-01	0.01083
2013-10-01	0.02696
2014-01-01	0.07564
2014-04-01	0.04133
2014-07-01	0.04135
2014-10-01	0.02553