Quarter	Billions of US Dollars
1991-04-01	0.1250
1991-07-01	0.1250
1991-10-01	0.1250
1992-01-01	0.1250
1992-04-01	0.1250
1992-07-01	0.1250
1992-10-01	0.1250
1993-01-01	0.1250
1993-04-01	0.1250
1993-07-01	0.1250
1993-10-01	0.2350
1994-01-01	0.3350
1994-04-01	0.9600
1994-07-01	1.0600
1994-10-01	1.0600
1995-01-01	1.0600
1995-04-01	1.0600
1995-07-01	1.0950
1995-10-01	1.0948
1996-01-01	1.0936
1996-04-01	1.1780
1996-07-01	1.3278
1996-10-01	1.4007
1997-01-01	1.4466
1997-04-01	1.4513
1997-07-01	1.4814
1997-10-01	1.4813
1998-01-01	1.4752
1998-04-01	1.4153
1998-07-01	1.4128
1998-10-01	1.3791
1999-01-01	1.3791
1999-04-01	1.2291
1999-07-01	0.8791
1999-10-01	0.8041
2000-01-01	0.7661
2000-04-01	0.7661
2000-07-01	0.7360
2000-10-01	0.5260
2001-01-01	0.5260
2001-04-01	0.3000
2001-07-01	0.3000
2001-10-01	0.3000
2002-01-01	0.3000
2002-04-01	0.4500
2002-07-01	0.4500
2002-10-01	0.4500
2003-01-01	0.4500
2003-04-01	0.4500
2003-07-01	0.6000
2003-10-01	0.6000
2004-01-01	0.7250
2004-04-01	0.7250
2004-07-01	0.7250
2004-10-01	0.7250
2005-01-01	0.9250
2005-04-01	0.9250
2005-07-01	0.9250
2005-10-01	0.9250
2006-01-01	0.9250
2006-04-01	0.7750
2006-07-01	0.7750
2006-10-01	0.8850
2007-01-01	0.7350
2007-04-01	0.9100
2007-07-01	0.9100
2007-10-01	0.9100
2008-01-01	0.9100
2008-04-01	0.9100
2008-07-01	0.9100
2008-10-01	0.9100
2009-01-01	0.9100
2009-04-01	0.7100
2009-07-01	0.9100
2009-10-01	0.7850
2010-01-01	1.1700
2010-04-01	1.1700
2010-07-01	1.0534
2010-10-01	0.9034
2011-01-01	0.9034
2011-04-01	1.0184
2011-07-01	1.0184
2011-10-01	3.8584
2012-01-01	3.9634
2012-04-01	4.3384
2012-07-01	4.2550
2012-10-01	5.0700
2013-01-01	5.0700
2013-04-01	5.6600
2013-07-01	7.2100
2013-10-01	7.3600
2014-01-01	7.3900
2014-04-01	7.3900
2014-07-01	8.8900
2014-10-01	9.1019
2015-01-01	8.9384
2015-04-01	15.5429