Quarter	US Dollars, Sum Over Component Sub-periods
1995-01-01	3284000000
1995-04-01	4070000000
1995-07-01	3370000000
1995-10-01	3656000000
1996-01-01	3178000000
1996-04-01	3424000000
1996-07-01	3130000000
1996-10-01	3260000000
1997-01-01	2976000000
1997-04-01	3349000000
1997-07-01	2803000000
1997-10-01	3074000000
1998-01-01	3067000000
1998-04-01	3229000000
1998-07-01	2925000000
1998-10-01	3485000000
1999-01-01	3016000000
1999-04-01	3452000000
1999-07-01	2591000000
1999-10-01	3165000000
2000-01-01	3033000000
2000-04-01	2982000000
2000-07-01	2756000000
2000-10-01	2875000000
2001-01-01	2856000000
2001-04-01	2817000000
2001-07-01	2580000000
2001-10-01	2750000000
2002-01-01	2600000000
2002-04-01	2804000000
2002-07-01	2807000000
2002-10-01	3133000000
2003-01-01	3240000000
2003-04-01	3515000000
2003-07-01	3295000000
2003-10-01	3812000000
2004-01-01	3935000000
2004-04-01	4371000000
2004-07-01	4159000000
2004-10-01	4920000000
2005-01-01	4652000000
2005-04-01	4861000000
2005-07-01	4676000000
2005-10-01	5218000000
2006-01-01	5093000000
2006-04-01	5532000000
2006-07-01	5647000000
2006-10-01	6602000000
2007-01-01	6593000000
2007-04-01	7269000000
2007-07-01	7328000000
2007-10-01	8299000000
2008-01-01	8345000000
2008-04-01	9396000000
2008-07-01	8677000000
2008-10-01	6963000000
2009-01-01	5319000000
2009-04-01	5592000000
2009-07-01	6068000000
2009-10-01	6776000000
2010-01-01	6141000000
2010-04-01	6373000000
2010-07-01	6365000000
2010-10-01	7363000000
2011-01-01	7439000000
2011-04-01	8244000000
2011-07-01	7737000000
2011-10-01	7759000000
2012-01-01	7311000000
2012-04-01	7186000000
2012-07-01	6536000000
2012-10-01	7008000000
2013-01-01	6912000000
2013-04-01	7044000000
2013-07-01	6863000000
2013-10-01	7578000000
2014-01-01	7402000000
2014-04-01	7593000000