Quarter	Billions of US Dollars
1989-10-01	92.54
1990-01-01	88.68
1990-04-01	95.56
1990-07-01	101.82
1990-10-01	100.49
1991-01-01	101.86
1991-04-01	106.30
1991-07-01	115.53
1991-10-01	117.98
1992-01-01	117.12
1992-04-01	121.76
1992-07-01	116.05
1992-10-01	115.11
1993-01-01	124.18
1993-04-01	119.41
1993-07-01	117.16
1993-10-01	127.36
1994-01-01	126.38
1994-04-01	128.47
1994-07-01	128.20
1994-10-01	138.58
1995-01-01	134.86
1995-04-01	136.13
1995-07-01	143.15
1995-10-01	145.75
1996-01-01	149.33
1996-04-01	153.32
1996-07-01	157.66
1996-10-01	163.81
1997-01-01	158.59
1997-04-01	154.94
1997-07-01	152.79
1997-10-01	134.29
1998-01-01	136.54
1998-04-01	127.64
1998-07-01	126.38
1998-10-01	129.70
1999-01-01	132.77
1999-04-01	137.66
1999-07-01	134.52
1999-10-01	132.86
2000-01-01	126.49
2000-04-01	125.00
2000-07-01	114.35
2000-10-01	120.36
2001-01-01	106.99
2001-04-01	112.12
2001-07-01	110.69
2001-10-01	115.35
2002-01-01	119.40
2002-04-01	131.39
2002-07-01	132.51
2002-10-01	135.61
2003-01-01	146.01
2003-04-01	164.50
2003-07-01	164.71
2003-10-01	187.40
2004-01-01	195.54
2004-04-01	182.35
2004-07-01	192.20
2004-10-01	212.98
2005-01-01	223.69
2005-04-01	231.05
2005-07-01	231.60
2005-10-01	234.61
2006-01-01	236.26
2006-04-01	251.44
2006-07-01	266.43
2006-10-01	279.03
2007-01-01	291.06
2007-04-01	324.18
2007-07-01	343.33
2007-10-01	334.67
2008-01-01	385.47
2008-04-01	455.30
2008-07-01	378.40
2008-10-01	414.82
2009-01-01	433.01
2009-04-01	525.91
2009-07-01	597.63
2009-10-01	628.38
2010-01-01	658.43
2010-04-01	639.82
2010-07-01	755.18
2010-10-01	811.91
2011-01-01	847.04
2011-04-01	905.07
2011-07-01	890.58
2011-10-01	951.08
2012-01-01	1030.62
2012-04-01	1024.64
2012-07-01	1099.22
2012-10-01	1083.81
2013-01-01	1099.52
2013-04-01	981.03
2013-07-01	1007.93
2013-10-01	991.46
2014-01-01	1067.29
2014-04-01	1128.14
2014-07-01	1098.39
2014-10-01	1081.38
2015-01-01	1052.24