Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	272000000
1997-04-01	410000000
1997-07-01	317000000
1997-10-01	440000000
1998-01-01	608000000
1998-04-01	564000000
1998-07-01	771000000
1998-10-01	706000000
1999-01-01	500000000
1999-04-01	516000000
1999-07-01	397000000
1999-10-01	464000000
2000-01-01	603000000
2000-04-01	801000000
2000-07-01	776000000
2000-10-01	798000000
2001-01-01	928000000
2001-04-01	837000000
2001-07-01	864000000
2001-10-01	772000000
2002-01-01	490000000
2002-04-01	661000000
2002-07-01	911000000
2002-10-01	714000000
2003-01-01	618000000
2003-04-01	921000000
2003-07-01	930000000
2003-10-01	815000000
2004-01-01	1021000000
2004-04-01	1338000000
2004-07-01	1561000000
2004-10-01	1385000000
2005-01-01	1372000000
2005-04-01	1858000000
2005-07-01	2081000000
2005-10-01	1687000000
2006-01-01	1734000000
2006-04-01	2293000000
2006-07-01	2734000000
2006-10-01	2279000000
2007-01-01	1977000000
2007-04-01	2630000000
2007-07-01	2899000000
2007-10-01	2634000000
2008-01-01	2462000000
2008-04-01	2982000000
2008-07-01	3309000000
2008-10-01	2373000000
2009-01-01	1375000000
2009-04-01	1689000000
2009-07-01	1976000000
2009-10-01	1585000000
2010-01-01	1648000000
2010-04-01	1963000000
2010-07-01	2272000000
2010-10-01	2146000000
2011-01-01	1730000000
2011-04-01	2333000000
2011-07-01	2252000000
2011-10-01	2087000000
2012-01-01	1762000000
2012-04-01	1931000000
2012-07-01	2434000000
2012-10-01	2173000000
2013-01-01	1342000000
2013-04-01	1842000000
2013-07-01	2117000000
2013-10-01	2233000000
2014-01-01	1375000000