Quarter	Billions of US Dollars
1997-10-01	4734.24
1998-01-01	4722.28
1998-04-01	4464.24
1998-07-01	4831.68
1998-10-01	5416.85
1999-01-01	5431.75
1999-04-01	5419.25
1999-07-01	6263.66
1999-10-01	6619.38
2000-01-01	6434.78
2000-04-01	6464.02
2000-07-01	6349.69
2000-10-01	6073.97
2001-01-01	5767.73
2001-04-01	5918.76
2001-07-01	6215.66
2001-10-01	5708.86
2002-01-01	5723.89
2002-04-01	6523.45
2002-07-01	6535.08
2002-10-01	6760.27
2003-01-01	6894.30
2003-04-01	6946.92
2003-07-01	7408.18
2003-10-01	7801.79
2004-01-01	8160.66
2004-04-01	7884.37
2004-07-01	7928.85
2004-10-01	8647.77
2005-01-01	8605.01
2005-04-01	8553.57
2005-07-01	8305.51
2005-10-01	8087.53
2006-01-01	8041.37
2006-04-01	8101.08
2006-07-01	8072.91
2006-10-01	7995.13
2007-01-01	8073.70
2007-04-01	7573.13
2007-07-01	8215.19
2007-10-01	8423.11
2008-01-01	9723.44
2008-04-01	8980.69
2008-07-01	9158.21
2008-10-01	10694.70
2009-01-01	9673.23
2009-04-01	9833.46
2009-07-01	10567.00
2009-10-01	10349.60
2010-01-01	10218.12
2010-04-01	11107.00
2010-07-01	12021.65
2010-10-01	12310.17
2011-01-01	11975.58
2011-04-01	12492.33
2011-07-01	13313.08
2011-10-01	13204.13
2012-01-01	12560.16
2012-04-01	13169.90
2012-07-01	13566.44
2012-10-01	12182.80
2013-01-01	11448.52
2013-04-01	10877.21
2013-07-01	11104.85
2013-10-01	10426.30
2014-01-01	10742.80
2014-04-01	11013.93
2014-07-01	10273.24
2014-10-01	9549.79
2015-01-01	9572.37