Quarter	Billions of US Dollars
1993-07-01	0.58294
1993-10-01	0.38367
1994-01-01	0.37087
1994-04-01	0.39387
1994-07-01	0.41524
1994-10-01	0.41748
1995-01-01	0.46839
1995-04-01	0.47627
1995-07-01	0.47862
1995-10-01	0.48851
1996-01-01	0.48414
1996-04-01	2.33154
1996-07-01	2.34316
1996-10-01	2.34298
1997-01-01	2.38465
1997-04-01	2.36164
1997-07-01	2.35356
1997-10-01	2.34202
1998-01-01	2.30855
1998-04-01	2.33969
1998-07-01	2.44937
1998-10-01	3.64428
1999-01-01	3.45144
1999-04-01	3.37102
1999-07-01	3.44790
1999-10-01	3.31673
2000-01-01	3.07731
2000-04-01	3.08412
2000-07-01	1.34460
2000-10-01	1.43149
2001-01-01	1.36708
2001-04-01	1.32126
2001-07-01	2.16034
2001-10-01	3.15279
2002-01-01	3.11034
2002-04-01	3.56629
2002-07-01	3.53520
2002-10-01	3.77085
2003-01-01	3.92902
2003-04-01	3.42810
2003-07-01	3.49560
2003-10-01	3.15750
2004-01-01	3.05600
2004-04-01	3.03875
2004-07-01	2.90246
2004-10-01	0.87038
2005-01-01	0.82840
2005-04-01	0.77268
2005-07-01	0.76948
2005-10-01	0.75383
2006-01-01	0.77345
2006-04-01	0.81236
2006-07-01	0.80897
2006-10-01	0.84156
2007-01-01	0.85102
2007-04-01	0.86297
2007-07-01	0.90604
2007-10-01	0.94067
2008-01-01	1.01039
2008-04-01	1.00732
2008-07-01	0.91396
2008-10-01	0.88930
2009-01-01	0.85038
2009-04-01	0.90316
2009-07-01	1.22020
2009-10-01	1.20045
2010-01-01	1.12320
2010-04-01	1.02254
2010-07-01	1.13729
2010-10-01	1.11346
2011-01-01	1.18387
2011-04-01	1.20437
2011-07-01	1.12521
2011-10-01	1.07821
2012-01-01	1.11296
2012-04-01	1.04912
2012-07-01	1.07746
2012-10-01	1.09946
2013-01-01	1.06704
2013-04-01	1.08996
2013-07-01	1.12537
2013-10-01	2.86983
2014-01-01	2.87112
2014-04-01	2.85291
2014-07-01	1.60865
2014-10-01	1.55140
2015-01-01	1.40829
2015-04-01	1.45680