Quarter	Billions of US Dollars
1993-07-01	85.32
1993-10-01	96.68
1994-01-01	83.14
1994-04-01	120.99
1994-07-01	94.36
1994-10-01	91.09
1995-01-01	94.54
1995-04-01	95.94
1995-07-01	101.23
1995-10-01	96.20
1996-01-01	144.95
1996-04-01	178.63
1996-07-01	182.61
1996-10-01	149.25
1997-01-01	179.16
1997-04-01	156.24
1997-07-01	156.88
1997-10-01	99.27
1998-01-01	209.31
1998-04-01	179.70
1998-07-01	129.27
1998-10-01	157.18
1999-01-01	238.12
1999-04-01	225.26
1999-07-01	224.20
1999-10-01	172.99
2000-01-01	270.41
2000-04-01	229.44
2000-07-01	252.12
2000-10-01	216.50
2001-01-01	414.78
2001-04-01	405.10
2001-07-01	234.25
2001-10-01	305.61
2002-01-01	357.32
2002-04-01	308.62
2002-07-01	209.78
2002-10-01	257.38
2003-01-01	403.53
2003-04-01	417.89
2003-07-01	316.24
2003-10-01	351.57
2004-01-01	467.40
2004-04-01	358.30
2004-07-01	357.42
2004-10-01	386.35
2005-01-01	509.40
2005-04-01	429.01
2005-07-01	404.23
2005-10-01	431.01
2006-01-01	562.65
2006-04-01	509.83
2006-07-01	477.88
2006-10-01	606.80
2007-01-01	667.37
2007-04-01	724.61
2007-07-01	474.21
2007-10-01	514.91
2008-01-01	527.37
2008-04-01	826.48
2008-07-01	394.21
2008-10-01	388.10
2009-01-01	727.87
2009-04-01	858.06
2009-07-01	623.67
2009-10-01	587.07
2010-01-01	729.96
2010-04-01	480.36
2010-07-01	617.04
2010-10-01	496.11
2011-01-01	787.22
2011-04-01	652.93
2011-07-01	448.86
2011-10-01	453.55
2012-01-01	1052.23
2012-04-01	559.13
2012-07-01	648.31
2012-10-01	637.12
2013-01-01	707.17
2013-04-01	668.41
2013-07-01	585.24
2013-10-01	654.74
2014-01-01	819.33
2014-04-01	881.38
2014-07-01	682.75
2014-10-01	575.24
2015-01-01	794.14
2015-04-01	671.84