Quarter	Billions of US Dollars
1993-07-01	0.03000
1994-01-01	0.14626
1994-04-01	0.00768
1994-07-01	0.13306
1994-10-01	0.13946
1995-01-01	0.10698
1995-04-01	0.14074
1995-07-01	0.23166
1995-10-01	0.23731
1996-01-01	0.27814
1996-04-01	0.43492
1996-07-01	0.50145
1996-10-01	0.64793
1997-01-01	0.87889
1997-04-01	0.97493
1997-07-01	1.39623
1997-10-01	0.91744
1998-01-01	0.77147
1998-04-01	0.62563
1998-07-01	0.31313
1998-10-01	0.63042
1999-01-01	1.10980
1999-04-01	1.11340
1999-07-01	1.20945
1999-10-01	1.79536
2000-01-01	1.21000
2000-04-01	1.15855
2000-07-01	1.17936
2000-10-01	0.61899
2001-01-01	0.68186
2001-04-01	0.89315
2001-07-01	0.90835
2001-10-01	0.61060
2002-01-01	0.43018
2002-04-01	0.61356
2002-07-01	0.41882
2002-10-01	0.68339
2003-01-01	0.43550
2003-04-01	0.44130
2003-07-01	0.53984
2003-10-01	0.59067
2004-01-01	0.57024
2004-04-01	0.44604
2004-07-01	0.69136
2004-10-01	0.46206
2005-01-01	0.34683
2005-04-01	0.29297
2005-07-01	0.03000
2005-10-01	0.06800
2006-01-01	0.03700
2006-04-01	0.05150
2006-07-01	0.05950
2006-10-01	0.07025
2007-01-01	0.06973
2007-04-01	0.11671
2007-07-01	0.05727
2007-10-01	0.09995
2008-01-01	0.09274
2008-04-01	0.08446
2008-07-01	0.06726
2008-10-01	0.04856
2009-01-01	0.03749
2009-04-01	0.01800
2009-07-01	0.04172
2009-10-01	0.03961
2010-01-01	0.03571
2010-04-01	0.00019
2010-07-01	0.00015
2010-10-01	0.00494
2011-01-01	0.00380
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	0.04635
2014-10-01	0.04567
2015-01-01	0.20629
2015-04-01	1.12379