Quarter	US Dollars, Sum Over Component Sub-periods
1995-01-01	3197000000
1995-04-01	3430000000
1995-07-01	3126000000
1995-10-01	3157000000
1996-01-01	2994000000
1996-04-01	2976000000
1996-07-01	2920000000
1996-10-01	2920000000
1997-01-01	2643000000
1997-04-01	2951000000
1997-07-01	2678000000
1997-10-01	2887000000
1998-01-01	2711000000
1998-04-01	2942000000
1998-07-01	2862000000
1998-10-01	3171000000
1999-01-01	2706000000
1999-04-01	2670000000
1999-07-01	2547000000
1999-10-01	2762000000
2000-01-01	2644000000
2000-04-01	2658000000
2000-07-01	2453000000
2000-10-01	2562000000
2001-01-01	2727000000
2001-04-01	2591000000
2001-07-01	2491000000
2001-10-01	2520000000
2002-01-01	2515000000
2002-04-01	2761000000
2002-07-01	2855000000
2002-10-01	2949000000
2003-01-01	3071000000
2003-04-01	3364000000
2003-07-01	3235000000
2003-10-01	3561000000
2004-01-01	3776000000
2004-04-01	3936000000
2004-07-01	3952000000
2004-10-01	4462000000
2005-01-01	4423000000
2005-04-01	4742000000
2005-07-01	4384000000
2005-10-01	4603000000
2006-01-01	4890000000
2006-04-01	5485000000
2006-07-01	5401000000
2006-10-01	5933000000
2007-01-01	6341000000
2007-04-01	6843000000
2007-07-01	6852000000
2007-10-01	7427000000
2008-01-01	7758000000
2008-04-01	8576000000
2008-07-01	7748000000
2008-10-01	6165000000
2009-01-01	5236000000
2009-04-01	5652000000
2009-07-01	5813000000
2009-10-01	6420000000
2010-01-01	5997000000
2010-04-01	6136000000
2010-07-01	6184000000
2010-10-01	6821000000
2011-01-01	7141000000
2011-04-01	7972000000
2011-07-01	7463000000
2011-10-01	7279000000
2012-01-01	7035000000
2012-04-01	7129000000
2012-07-01	6611000000
2012-10-01	7039000000
2013-01-01	7082000000
2013-04-01	7359000000
2013-07-01	7197000000
2013-10-01	7609000000
2014-01-01	7815000000
2014-04-01	8053000000