Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	72000000
1997-04-01	-315000000
1997-07-01	-264000000
1997-10-01	52000000
1998-01-01	-160000000
1998-04-01	-46000000
1998-07-01	-277000000
1998-10-01	-86000000
1999-01-01	-229000000
1999-04-01	-126000000
1999-07-01	-309000000
1999-10-01	-131000000
2000-01-01	-201000000
2000-04-01	-74000000
2000-07-01	-7000000
2000-10-01	-449000000
2001-01-01	112000000
2001-04-01	-625000000
2001-07-01	91000000
2001-10-01	-192000000
2002-01-01	-199000000
2002-04-01	-386000000
2002-07-01	-109000000
2002-10-01	-367000000
2003-01-01	-565000000
2003-04-01	-928000000
2003-07-01	-266000000
2003-10-01	-702000000
2004-01-01	-2322000000
2004-04-01	-1905000000
2004-07-01	-1807000000
2004-10-01	-2403000000
2005-01-01	-1811000000
2005-04-01	-1779000000
2005-07-01	-1463000000
2005-10-01	-1790000000
2006-01-01	-1770000000
2006-04-01	-2553000000
2006-07-01	-1909000000
2006-10-01	-3516000000
2007-01-01	-3543000000
2007-04-01	-4414000000
2007-07-01	-3516000000
2007-10-01	-4914000000
2008-01-01	-3109000000
2008-04-01	-4419000000
2008-07-01	-3011000000
2008-10-01	-2343000000
2009-01-01	-3057000000
2009-04-01	-4578000000
2009-07-01	-3936000000
2009-10-01	-4980000000
2010-01-01	-4187000000
2010-04-01	-4286000000
2010-07-01	-5362000000
2010-10-01	-5245000000
2011-01-01	-4614000000
2011-04-01	-7156000000
2011-07-01	-6263000000
2011-10-01	-5522000000
2012-01-01	-5258000000
2012-04-01	-5480000000
2012-07-01	-6289000000
2012-10-01	-5643000000
2013-01-01	-4984000000
2013-04-01	-5982000000
2013-07-01	-6250000000
2013-10-01	-4966000000
2014-01-01	-5414000000