Quarter	Billions of US Dollars
1987-01-01	136.84
1987-04-01	143.19
1987-07-01	149.94
1987-10-01	159.08
1988-01-01	163.54
1988-04-01	167.34
1988-07-01	171.62
1988-10-01	186.01
1989-01-01	188.70
1989-04-01	190.04
1989-07-01	200.33
1989-10-01	214.21
1990-01-01	219.32
1990-04-01	227.86
1990-07-01	250.53
1990-10-01	262.24
1991-01-01	253.87
1991-04-01	257.54
1991-07-01	277.05
1991-10-01	295.31
1992-01-01	290.22
1992-04-01	306.39
1992-07-01	318.52
1992-10-01	298.78
1993-01-01	307.31
1993-04-01	316.70
1993-07-01	387.46
1993-10-01	395.25
1994-01-01	423.16
1994-04-01	450.88
1994-07-01	473.17
1994-10-01	480.38
1995-01-01	518.88
1995-04-01	541.01
1995-07-01	558.51
1995-10-01	577.21
1996-01-01	608.99
1996-04-01	644.82
1996-07-01	678.43
1996-10-01	734.01
1997-01-01	758.26
1997-04-01	812.17
1997-07-01	853.15
1997-10-01	884.58
1998-01-01	935.23
1998-04-01	1011.79
1998-07-01	1091.04
1998-10-01	1144.27
1999-01-01	1202.84
1999-04-01	1304.48
1999-07-01	1458.36
1999-10-01	1493.57
2000-01-01	1543.50
2000-04-01	1632.49
2000-07-01	1698.64
2000-10-01	1873.87
2001-01-01	1997.93
2001-04-01	2127.81
2001-07-01	2299.26
2001-10-01	2427.84
2002-01-01	2550.95
2002-04-01	2852.95
2002-07-01	2934.38
2002-10-01	3110.96
2003-01-01	3249.76
2003-04-01	3426.45
2003-07-01	3609.55
2003-10-01	3931.07
2004-01-01	4008.25
2004-04-01	4116.30
2004-07-01	4253.08
2004-10-01	4618.96
2005-01-01	4598.93
2005-04-01	4587.81
2005-07-01	4642.35
2005-10-01	4808.35
2006-01-01	5029.69
2006-04-01	5460.42
2006-07-01	5725.78
2006-10-01	6278.40
2007-01-01	6644.14
2007-04-01	7148.45
2007-07-01	7428.98
2007-10-01	7670.22
2008-01-01	8000.21
2008-04-01	8250.19
2008-07-01	7889.81
2008-10-01	7949.16
2009-01-01	8012.85
2009-04-01	8598.95
2009-07-01	8902.93
2009-10-01	8953.59
2010-01-01	8639.68
2010-04-01	8248.31
2010-07-01	8803.58
2010-10-01	8753.98
2011-01-01	8998.51
2011-04-01	9075.42
2011-07-01	8760.81
2011-10-01	8703.75
2012-01-01	8981.07
2012-04-01	8655.66
2012-07-01	8856.36
2012-10-01	8993.06
2013-01-01	8838.81
2013-04-01	8961.08
2013-07-01	9150.69
2013-10-01	9247.70
2014-01-01	9252.29
2014-04-01	9352.65
2014-07-01	8995.86
2014-10-01	8807.13
2015-01-01	8435.40
2015-04-01	8755.91