Quarter	Billions of US Dollars
1993-07-01	240.67
1993-10-01	236.28
1994-01-01	244.71
1994-04-01	251.51
1994-07-01	257.68
1994-10-01	259.71
1995-01-01	280.10
1995-04-01	285.26
1995-07-01	279.20
1995-10-01	275.08
1996-01-01	273.36
1996-04-01	276.30
1996-07-01	278.27
1996-10-01	280.67
1997-01-01	272.37
1997-04-01	279.03
1997-07-01	276.11
1997-10-01	272.01
1998-01-01	291.20
1998-04-01	298.81
1998-07-01	319.23
1998-10-01	340.49
1999-01-01	339.33
1999-04-01	340.82
1999-07-01	355.94
1999-10-01	348.82
2000-01-01	345.89
2000-04-01	350.42
2000-07-01	341.24
2000-10-01	353.45
2001-01-01	343.15
2001-04-01	345.21
2001-07-01	368.87
2001-10-01	360.41
2002-01-01	368.47
2002-04-01	397.11
2002-07-01	404.51
2002-10-01	415.18
2003-01-01	429.12
2003-04-01	455.89
2003-07-01	465.92
2003-10-01	479.98
2004-01-01	490.01
2004-04-01	488.80
2004-07-01	495.46
2004-10-01	519.77
2005-01-01	510.82
2005-04-01	502.98
2005-07-01	518.45
2005-10-01	508.48
2006-01-01	514.89
2006-04-01	533.55
2006-07-01	531.86
2006-10-01	552.07
2007-01-01	558.55
2007-04-01	577.92
2007-07-01	606.14
2007-10-01	617.20
2008-01-01	656.97
2008-04-01	668.53
2008-07-01	630.48
2008-10-01	615.36
2009-01-01	616.44
2009-04-01	721.43
2009-07-01	752.06
2009-10-01	750.81
2010-01-01	766.05
2010-04-01	763.49
2010-07-01	830.23
2010-10-01	827.31
2011-01-01	900.12
2011-04-01	948.77
2011-07-01	960.08
2011-10-01	957.27
2012-01-01	1155.19
2012-04-01	1150.89
2012-07-01	1213.45
2012-10-01	1235.00
2013-01-01	1208.26
2013-04-01	1254.68
2013-07-01	1304.51
2013-10-01	1330.51
2014-01-01	1392.68
2014-04-01	1407.49
2014-07-01	1367.89
2014-10-01	1326.27
2015-01-01	1265.29
2015-04-01	1315.71