Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	833000000
1997-04-01	837000000
1997-07-01	839000000
1997-10-01	910000000
1998-01-01	885000000
1998-04-01	983000000
1998-07-01	1050000000
1998-10-01	1253000000
1999-01-01	1145000000
1999-04-01	1135000000
1999-07-01	1248000000
1999-10-01	1401000000
2000-01-01	2037000000
2000-04-01	2274000000
2000-07-01	2275000000
2000-10-01	2410000000
2001-01-01	1903000000
2001-04-01	2071000000
2001-07-01	2399000000
2001-10-01	2595000000
2002-01-01	1878000000
2002-04-01	2200000000
2002-07-01	2558000000
2002-10-01	2626000000
2003-01-01	2389000000
2003-04-01	2596000000
2003-07-01	2932000000
2003-10-01	3014000000
2004-01-01	2803000000
2004-04-01	3119000000
2004-07-01	3864000000
2004-10-01	3606000000
2005-01-01	3184000000
2005-04-01	3876000000
2005-07-01	4379000000
2005-10-01	4081000000
2006-01-01	4036000000
2006-04-01	5060000000
2006-07-01	5417000000
2006-10-01	5343000000
2007-01-01	4869000000
2007-04-01	5741000000
2007-07-01	6853000000
2007-10-01	6693000000
2008-01-01	6843000000
2008-04-01	8233000000
2008-07-01	9132000000
2008-10-01	6335000000
2009-01-01	4926000000
2009-04-01	5659000000
2009-07-01	6904000000
2009-10-01	6702000000
2010-01-01	5936000000
2010-04-01	7023000000
2010-07-01	8009000000
2010-10-01	8652000000
2011-01-01	6699000000
2011-04-01	8056000000
2011-07-01	8646000000
2011-10-01	8493000000
2012-01-01	7120000000
2012-04-01	7568000000
2012-07-01	8564000000
2012-10-01	8679000000
2013-01-01	7006000000
2013-04-01	8085000000
2013-07-01	9092000000
2013-10-01	9005000000
2014-01-01	7579000000