Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	460000000
1997-04-01	780000000
1997-07-01	780000000
1997-10-01	1030000000
1998-01-01	1000000000
1998-04-01	1260000000
1998-07-01	1680000000
1998-10-01	1020000000
1999-01-01	1130000000
1999-04-01	1040000000
1999-07-01	2470000000
1999-10-01	1720000000
2000-01-01	1884000000
2000-04-01	1219000000
2000-07-01	1066000000
2000-10-01	5158000000
2001-01-01	1199000000
2001-04-01	905000000
2001-07-01	773000000
2001-10-01	2927000000
2002-01-01	1131000000
2002-04-01	824000000
2002-07-01	694000000
2002-10-01	1252000000
2003-01-01	1467000000
2003-04-01	864000000
2003-07-01	545000000
2003-10-01	1408000000
2004-01-01	4941000000
2004-04-01	3143000000
2004-07-01	1731000000
2004-10-01	1946000000
2005-01-01	2604000000
2005-04-01	669000000
2005-07-01	1759000000
2005-10-01	1885000000
2006-01-01	4491000000
2006-04-01	2106000000
2006-07-01	596000000
2006-10-01	3515000000
2007-01-01	5749000000
2007-04-01	3897000000
2007-07-01	4918000000
2007-10-01	3423000000
2008-01-01	4207000000
2008-04-01	2647000000
2008-07-01	1145000000
2008-10-01	2366000000
2009-01-01	1829000000
2009-04-01	435000000
2009-07-01	4107000000
2009-10-01	2089000000
2010-01-01	4785000000
2010-04-01	-126000000
2010-07-01	1085000000
2010-10-01	1117000000
2011-01-01	4468000000
2011-04-01	1144000000
2011-07-01	4093000000
2011-10-01	2705000000
2012-01-01	-692000000
2012-04-01	2785000000
2012-07-01	1038000000
2012-10-01	2182000000
2013-01-01	1493000000
2013-04-01	-566000000
2013-07-01	576000000
2013-10-01	-1803000000
2014-01-01	4565000000