Quarter	Billions of US Dollars
1993-07-01	0.53060
1993-10-01	0.52960
1994-01-01	0.78810
1994-04-01	0.73360
1994-07-01	1.03203
1994-10-01	1.36156
1995-01-01	1.30662
1995-04-01	1.30092
1995-07-01	1.22846
1995-10-01	1.06748
1996-01-01	0.79932
1996-04-01	0.91022
1996-07-01	0.95516
1996-10-01	0.91616
1997-01-01	0.96516
1997-04-01	0.98667
1997-07-01	1.80145
1997-10-01	2.16740
1998-01-01	2.42665
1998-04-01	2.67585
1998-07-01	1.76661
1998-10-01	1.30192
1999-01-01	1.16302
1999-04-01	1.37854
1999-07-01	1.50633
1999-10-01	1.86782
2000-01-01	1.89396
2000-04-01	2.34347
2000-07-01	2.06602
2000-10-01	1.69124
2001-01-01	1.74421
2001-04-01	0.94867
2001-07-01	1.11675
2001-10-01	1.20420
2002-01-01	0.84664
2002-04-01	0.66475
2002-07-01	0.45360
2002-10-01	0.76560
2003-01-01	0.87377
2003-04-01	0.96850
2003-07-01	0.89187
2003-10-01	0.34419
2004-01-01	0.23500
2004-04-01	0.36761
2004-07-01	0.37195
2004-10-01	0.44465
2005-01-01	0.34343
2005-04-01	0.12200
2005-07-01	0.22200
2005-10-01	0.16000
2006-01-01	0.10000
2006-04-01	0.10000
2007-10-01	0.69100
2008-01-01	0.69100
2008-04-01	0.70915
2008-07-01	2.70915
2008-10-01	2.02967
2009-01-01	2.02967
2009-04-01	2.31719
2009-07-01	0.45869
2009-10-01	0.69851
2010-01-01	0.77111
2010-04-01	0.47854
2010-07-01	0.35060
2010-10-01	0.48578
2011-01-01	0.41078
2011-04-01	0.84018
2011-07-01	0.82518
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
2015-04-01	0.25000