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	0.18562
1996-07-01	0.27986
1996-10-01	0.28603
1997-01-01	0.28939
1997-04-01	0.28535
1997-07-01	0.25207
1997-10-01	0.23007
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	0.97251
2000-10-01	0.22423
2001-01-01	0.21690
2001-04-01	0.48704
2001-07-01	0.58871
2001-10-01	0.44065
2002-01-01	0.37353
2002-04-01	0.56004
2002-07-01	0.35792
2002-10-01	0.64204
2003-01-01	0.39415
2003-04-01	0.39995
2003-07-01	0.52434
2003-10-01	0.51457
2004-01-01	0.49833
2004-04-01	0.37433
2004-07-01	0.62975
2004-10-01	0.41796
2005-01-01	0.27048
2005-04-01	0.25362
2005-10-01	0.00300
2006-01-01	0.00700
2006-04-01	0.01150
2006-07-01	0.02450
2006-10-01	0.03525
2007-01-01	0.03973
2007-04-01	0.08671
2007-07-01	0.05727
2007-10-01	0.06995
2008-01-01	0.06226
2008-04-01	0.05220
2008-07-01	0.03470
2008-10-01	0.01600
2009-01-01	0.00450
2009-04-01	0.01576
2009-07-01	0.01074
2009-10-01	0.00720
2010-01-01	0.00363
2011-01-01	0.00081
2011-04-01	0.02270
2011-07-01	0.01467
2011-10-01	0.00031
2012-01-01	0.00325
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