Quarter	Billions of US Dollars
1989-07-01	73.79
1989-10-01	69.62
1990-01-01	77.40
1990-04-01	81.36
1990-07-01	91.94
1990-10-01	89.32
1991-01-01	101.62
1991-04-01	102.95
1991-07-01	105.50
1991-10-01	106.43
1992-01-01	115.16
1992-04-01	119.02
1992-07-01	121.23
1992-10-01	115.77
1993-01-01	101.89
1993-04-01	104.51
1993-07-01	113.27
1993-10-01	115.66
1994-01-01	121.49
1994-04-01	125.28
1994-07-01	127.71
1994-10-01	121.12
1995-01-01	119.22
1995-04-01	125.35
1995-07-01	134.10
1995-10-01	142.39
1996-01-01	148.10
1996-04-01	170.33
1996-07-01	161.84
1996-10-01	171.35
1997-01-01	176.55
1997-04-01	182.41
1997-07-01	192.78
1997-10-01	191.12
1998-01-01	198.04
1998-04-01	195.77
1998-07-01	215.67
1998-10-01	222.82
1999-01-01	248.27
1999-04-01	254.40
1999-07-01	298.16
1999-10-01	317.36
2000-01-01	336.90
2000-04-01	380.29
2000-07-01	394.60
2000-10-01	444.29
2001-01-01	436.48
2001-04-01	404.16
2001-07-01	379.83
2001-10-01	365.57
2002-01-01	357.53
2002-04-01	388.65
2002-07-01	405.03
2002-10-01	408.88
2003-01-01	463.10
2003-04-01	478.13
2003-07-01	456.04
2003-10-01	521.24
2004-01-01	545.02
2004-04-01	546.72
2004-07-01	578.19
2004-10-01	627.30
2005-01-01	647.21
2005-04-01	639.15
2005-07-01	647.28
2005-10-01	622.16
2006-01-01	700.34
2006-04-01	758.32
2006-07-01	782.23
2006-10-01	833.56
2007-01-01	968.13
2007-04-01	1064.86
2007-07-01	1083.58
2007-10-01	1074.65
2008-01-01	1242.53
2008-04-01	1288.61
2008-07-01	1178.86
2008-10-01	1023.20
2009-01-01	950.73
2009-04-01	926.55
2009-07-01	967.14
2009-10-01	836.65
2010-01-01	855.06
2010-04-01	768.82
2010-07-01	849.96
2010-10-01	785.12
2011-01-01	848.55
2011-04-01	845.44
2011-07-01	836.56
2011-10-01	813.84
2012-01-01	943.88
2012-04-01	888.52
2012-07-01	856.33
2012-10-01	840.77
2013-01-01	834.25
2013-04-01	854.05
2013-07-01	896.04
2013-10-01	869.94
2014-01-01	870.28
2014-04-01	918.49
2014-07-01	915.99
2014-10-01	883.48
2015-01-01	888.22
2015-04-01	884.37