Quarter	Billions of US Dollars
1994-04-01	0.02000
1994-07-01	0.02000
1994-10-01	0.02000
1996-04-01	0.02000
1996-07-01	0.01000
1997-04-01	0.20000
1997-07-01	0.45300
1997-10-01	1.01400
1998-01-01	1.01196
1998-04-01	1.01571
1998-07-01	1.12619
1998-10-01	2.12783
1999-01-01	2.11923
1999-04-01	2.31958
1999-07-01	2.79725
1999-10-01	3.70702
2000-01-01	4.17305
2000-04-01	3.63724
2000-07-01	3.49573
2000-10-01	3.59494
2001-01-01	4.08505
2001-04-01	4.16970
2001-07-01	4.34438
2001-10-01	4.96650
2002-01-01	4.76466
2002-04-01	5.17417
2002-07-01	5.13836
2002-10-01	5.34449
2003-01-01	5.47923
2003-04-01	5.65442
2003-07-01	5.37652
2003-10-01	5.76706
2004-01-01	5.32220
2004-04-01	5.30177
2004-07-01	5.21177
2004-10-01	4.90051
2005-01-01	4.73289
2005-04-01	3.68914
2005-07-01	3.68155
2005-10-01	3.63691
2006-01-01	3.09202
2006-04-01	3.37002
2006-07-01	3.36380
2006-10-01	3.54493
2007-01-01	3.16373
2007-04-01	3.66177
2007-07-01	3.77144
2007-10-01	3.21080
2008-01-01	3.37493
2008-04-01	3.13124
2008-07-01	2.93337
2008-10-01	1.98109
2009-01-01	1.89861
2009-04-01	1.98683
2009-07-01	2.35120
2009-10-01	3.48449
2010-01-01	3.28472
2010-04-01	2.90169
2010-07-01	3.52654
2010-10-01	4.11132
2011-01-01	4.48490
2011-04-01	5.00271
2011-07-01	4.25171
2011-10-01	4.08844
2012-01-01	6.31987
2012-04-01	6.01231
2012-07-01	6.69153
2012-10-01	7.46565
2013-01-01	7.90063
2013-04-01	7.59041
2013-07-01	8.80773
2013-10-01	8.05972
2014-01-01	8.03125
2014-04-01	7.02791
2014-07-01	7.65645
2014-10-01	7.31070
2015-01-01	6.67353
2015-04-01	6.94841