Quarter	US Dollars, Sum Over Component Sub-periods
1998-01-01	40400000000
1998-04-01	47200000000
1998-07-01	47400000000
1998-10-01	48500000000
1999-01-01	37300000000
1999-04-01	45700000000
1999-07-01	54100000000
1999-10-01	57600000000
2000-01-01	51600000000
2000-04-01	62700000000
2000-07-01	67700000000
2000-10-01	67200000000
2001-01-01	59200000000
2001-04-01	65300000000
2001-07-01	70200000000
2001-10-01	71400000000
2002-01-01	64600000000
2002-04-01	78700000000
2002-07-01	89000000000
2002-10-01	93300000000
2003-01-01	86300000000
2003-04-01	104100000000
2003-07-01	117200000000
2003-10-01	130700000000
2004-01-01	115400000000
2004-04-01	142400000000
2004-07-01	158200000000
2004-10-01	177300000000
2005-01-01	156000000000
2005-04-01	186500000000
2005-07-01	204200000000
2005-10-01	215800000000
2006-01-01	197400000000
2006-04-01	231400000000
2006-07-01	262700000000
2006-10-01	278200000000
2007-01-01	252500000000
2007-04-01	294700000000
2007-07-01	331800000000
2007-10-01	341000000000
2008-01-01	307000000000
2008-04-01	362400000000
2008-07-01	409700000000
2008-10-01	355600000000
2009-01-01	245700000000
2009-04-01	275600000000
2009-07-01	326400000000
2009-10-01	356200000000
2010-01-01	316700000000
2010-04-01	389600000000
2010-07-01	430700000000
2010-10-01	444400000000
2011-01-01	401200000000
2011-04-01	475100000000
2011-07-01	519500000000
2011-10-01	508000000000
2012-01-01	431300000000
2012-04-01	526400000000
2012-07-01	543100000000
2012-10-01	556000000000
2013-01-01	511000000000
2013-04-01	546700000000