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	0.15700
1995-07-01	0.30572
1995-10-01	0.38814
1996-01-01	0.53550
1996-04-01	1.00899
1996-07-01	1.16121
1996-10-01	1.15329
1997-01-01	1.10486
1997-04-01	1.06094
1997-07-01	1.01242
1997-10-01	0.97280
1998-01-01	1.07342
1998-04-01	1.09764
1998-07-01	1.11997
1998-10-01	1.50478
1999-01-01	1.97399
1999-04-01	1.87473
1999-07-01	1.87092
1999-10-01	2.42482
2000-01-01	1.82383
2000-04-01	1.77806
2000-07-01	1.72898
2000-10-01	0.99921
2001-01-01	0.99918
2001-04-01	1.25134
2001-07-01	1.33750
2001-10-01	1.12461
2002-01-01	1.06371
2002-04-01	1.27273
2002-07-01	1.06669
2002-10-01	1.36263
2003-01-01	1.12270
2003-04-01	1.08410
2003-07-01	1.19269
2003-10-01	1.22509
2004-01-01	1.16732
2004-04-01	1.10205
2004-07-01	1.35556
2004-10-01	1.17389
2005-01-01	1.00037
2005-04-01	0.96722
2005-07-01	0.71295
2005-10-01	0.81709
2006-01-01	0.82596
2006-04-01	0.84587
2006-07-01	0.11300
2006-10-01	0.11816
2007-01-01	0.11314
2007-04-01	0.24012
2007-07-01	0.20768
2007-10-01	0.67636
2008-01-01	0.66867
2008-04-01	0.65921
2008-07-01	0.57106
2008-10-01	0.56525
2009-01-01	0.55375
2009-04-01	0.56501
2009-07-01	0.51299
2009-10-01	0.50945
2010-01-01	0.50299
2010-04-01	0.26841
2010-07-01	0.16041
2010-10-01	0.16041
2011-01-01	0.16122
2011-04-01	0.18311
2011-07-01	0.17508
2011-10-01	0.16072
2012-01-01	0.16366
2012-04-01	0.01147
2012-07-01	0.01041
2012-10-01	0.01114
2013-01-01	0.01420
2013-04-01	0.02132
2013-07-01	0.02124
2013-10-01	0.05110
2014-01-01	0.08605
2014-04-01	0.05174
2014-07-01	0.05176
2014-10-01	0.03594
2015-01-01	0.01041
2015-04-01	0.01041