Quarter	Billions of US Dollars
1993-07-01	0.61060
1993-10-01	0.55260
1994-01-01	0.79736
1994-04-01	0.85661
1994-07-01	1.36806
1994-10-01	1.77315
1995-01-01	1.55830
1995-04-01	1.59214
1995-07-01	1.55842
1995-10-01	1.69191
1996-01-01	1.03797
1996-04-01	0.96612
1996-07-01	0.63026
1996-10-01	1.06159
1997-01-01	1.02529
1997-04-01	1.06613
1997-07-01	1.24941
1997-10-01	1.60820
1998-01-01	1.71660
1998-04-01	1.74369
1998-07-01	1.48634
1998-10-01	0.89172
1999-01-01	0.82520
1999-04-01	1.11988
1999-07-01	1.14119
1999-10-01	1.46728
2000-01-01	1.44386
2000-04-01	1.47470
2000-07-01	1.32813
2000-10-01	1.09359
2001-01-01	1.16727
2001-04-01	0.50116
2001-07-01	0.74730
2001-10-01	0.62998
2002-01-01	0.52760
2002-04-01	0.52895
2002-07-01	0.30360
2002-10-01	0.40500
2003-01-01	0.51317
2003-04-01	0.52115
2003-07-01	0.44452
2003-10-01	0.25919
2004-01-01	0.00479
2004-04-01	0.21222
2004-07-01	0.21645
2004-10-01	0.33445
2005-01-01	0.35103
2005-04-01	0.15470
2005-07-01	0.25382
2005-10-01	0.18503
2006-01-01	0.15602
2006-04-01	0.13000
2006-07-01	0.07669
2006-10-01	0.07146
2007-01-01	0.07225
2007-04-01	0.07898
2007-07-01	0.07953
2007-10-01	0.29486
2008-01-01	0.30095
2008-04-01	0.30614
2008-07-01	0.25915
2008-10-01	0.02967
2009-01-01	0.02967
2009-04-01	0.19804
2009-07-01	0.34098
2009-10-01	0.57946
2010-01-01	0.57946
2010-04-01	0.40354
2010-07-01	0.27560
2010-10-01	0.12560
2011-01-01	0.12560
2011-04-01	0.55500
2011-07-01	0.54000
2011-10-01	0.44000
2012-01-01	0.44000
2012-10-01	0.62021
2013-01-01	0.61519
2013-04-01	0.61874
2013-07-01	0.62423
2014-01-01	0.00905
2014-04-01	0.00937
2014-07-01	0.00892
2014-10-01	0.00862
2015-04-01	0.25000