Quarter	Billions of US Dollars
1993-07-01	289.46
1993-10-01	287.20
1994-01-01	309.07
1994-04-01	326.34
1994-07-01	353.99
1994-10-01	362.98
1995-01-01	396.18
1995-04-01	413.54
1995-07-01	409.40
1995-10-01	402.60
1996-01-01	402.08
1996-04-01	404.02
1996-07-01	405.79
1996-10-01	404.13
1997-01-01	389.77
1997-04-01	398.07
1997-07-01	396.39
1997-10-01	376.47
1998-01-01	375.62
1998-04-01	374.09
1998-07-01	388.38
1998-10-01	400.22
1999-01-01	379.99
1999-04-01	377.27
1999-07-01	379.42
1999-10-01	370.04
2000-01-01	363.83
2000-04-01	365.32
2000-07-01	345.59
2000-10-01	344.97
2001-01-01	342.97
2001-04-01	343.24
2001-07-01	354.15
2001-10-01	354.57
2002-01-01	379.80
2002-04-01	403.48
2002-07-01	401.79
2002-10-01	417.81
2003-01-01	458.93
2003-04-01	499.76
2003-07-01	514.53
2003-10-01	539.14
2004-01-01	551.02
2004-04-01	560.55
2004-07-01	563.30
2004-10-01	597.21
2005-01-01	597.27
2005-04-01	587.38
2005-07-01	579.78
2005-10-01	580.60
2006-01-01	612.40
2006-04-01	655.43
2006-07-01	644.81
2006-10-01	662.12
2007-01-01	692.05
2007-04-01	742.87
2007-07-01	768.64
2007-10-01	747.31
2008-01-01	822.40
2008-04-01	841.43
2008-07-01	760.52
2008-10-01	766.80
2009-01-01	781.16
2009-04-01	882.47
2009-07-01	915.27
2009-10-01	898.60
2010-01-01	895.53
2010-04-01	855.65
2010-07-01	952.76
2010-10-01	948.23
2011-01-01	1009.86
2011-04-01	1034.16
2011-07-01	980.02
2011-10-01	945.42
2012-01-01	924.80
2012-04-01	880.97
2012-07-01	870.02
2012-10-01	907.96
2013-01-01	881.30
2013-04-01	873.66
2013-07-01	907.56
2013-10-01	895.25
2014-01-01	895.30
2014-04-01	916.12
2014-07-01	863.86
2014-10-01	844.06
2015-01-01	761.74
2015-04-01	770.58