Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	389000000
1980-04-01	484000000
1980-07-01	464000000
1980-10-01	548000000
1981-01-01	520000000
1981-04-01	658000000
1981-07-01	619000000
1981-10-01	647000000
1982-01-01	753000000
1982-04-01	766000000
1982-07-01	705000000
1982-10-01	600000000
1983-01-01	580000000
1983-04-01	543000000
1983-07-01	578000000
1983-10-01	649000000
1984-01-01	558000000
1984-04-01	669000000
1984-07-01	585000000
1984-10-01	629000000
1985-01-01	507000000
1985-04-01	376000000
1985-07-01	427000000
1985-10-01	449000000
1986-01-01	397000000
1986-04-01	428000000
1986-07-01	330000000
1986-10-01	475000000
1987-01-01	566000000
1987-04-01	472000000
1987-07-01	445000000
1987-10-01	358000000
1988-01-01	359000000
1988-04-01	451000000
1988-07-01	410000000
1988-10-01	470000000
1989-01-01	537000000
1989-04-01	566000000
1989-07-01	577000000
1989-10-01	672000000
1990-01-01	752000000
1990-04-01	592000000
1990-07-01	674000000
1990-10-01	823000000
1991-01-01	753000000
1991-04-01	715000000
1991-07-01	624000000
1991-10-01	773000000
1992-01-01	578000000
1992-04-01	579000000
1992-07-01	504000000
1992-10-01	761000000
1993-01-01	610000000
1993-04-01	609000000
1993-07-01	601000000
1993-10-01	630000000
1994-01-01	589000000
1994-04-01	757000000
1994-07-01	690000000
1994-10-01	736000000
1995-01-01	849000000
1995-04-01	837000000
1995-07-01	736000000
1995-10-01	984000000
1996-01-01	850000000
1996-04-01	828000000
1996-07-01	936000000
1996-10-01	988000000
1997-01-01	1034000000
1997-04-01	815000000
1997-07-01	874000000
1997-10-01	1097000000
1998-01-01	695000000
1998-04-01	639000000
1998-07-01	562000000
1998-10-01	800000000
1999-01-01	768000000
1999-04-01	829000000
1999-07-01	795000000
1999-10-01	887000000
2000-01-01	1321000000
2000-04-01	1719000000
2000-07-01	1412000000
2000-10-01	1961000000
2001-01-01	1645000000
2001-04-01	1751000000
2001-07-01	1484000000
2001-10-01	1721000000
2002-01-01	1532000000
2002-04-01	1540000000
2002-07-01	1707000000
2002-10-01	2087000000
2003-01-01	1888000000
2003-04-01	1547000000
2003-07-01	1561000000
2003-10-01	2107000000
2004-01-01	2494000000
2004-04-01	1936000000
2004-07-01	2248000000
2004-10-01	2691000000
2005-01-01	2811000000
2005-04-01	2353000000
2005-07-01	2457000000
2005-10-01	2555000000
2006-01-01	3043000000
2006-04-01	3128000000
2006-07-01	3986000000
2006-10-01	3931000000
2007-01-01	4393000000
2007-04-01	4317000000
2007-07-01	4978000000
2007-10-01	5227000000
2008-01-01	6122000000
2008-04-01	5542000000
2008-07-01	4615000000
2008-10-01	5373000000
2009-01-01	3361000000
2009-04-01	3653000000
2009-07-01	3455000000
2009-10-01	4046000000
2010-01-01	3796000000
2010-04-01	4276000000
2010-07-01	4062000000
2010-10-01	4220000000
2011-01-01	3853000000
2011-04-01	4958000000
2011-07-01	4643000000
2011-10-01	4280000000
2012-01-01	5162000000
2012-04-01	5846000000
2012-07-01	4641000000
2012-10-01	4611000000
2013-01-01	4594000000
2013-04-01	5955000000
2013-07-01	4788000000
2013-10-01	5365000000