Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	502000000
1980-04-01	749000000
1980-07-01	515000000
1980-10-01	894000000
1981-01-01	698000000
1981-04-01	1058000000
1981-07-01	813000000
1981-10-01	1089000000
1982-01-01	860000000
1982-04-01	1037000000
1982-07-01	811000000
1982-10-01	1131000000
1983-01-01	793000000
1983-04-01	920000000
1983-07-01	720000000
1983-10-01	994000000
1984-01-01	783000000
1984-04-01	1055000000
1984-07-01	931000000
1984-10-01	1194000000
1985-01-01	890000000
1985-04-01	1088000000
1985-07-01	941000000
1985-10-01	1074000000
1986-01-01	999000000
1986-04-01	1173000000
1986-07-01	817000000
1986-10-01	1046000000
1987-01-01	803000000
1987-04-01	1023000000
1987-07-01	712000000
1987-10-01	1041000000
1988-01-01	771000000
1988-04-01	844000000
1988-07-01	640000000
1988-10-01	819000000
1989-01-01	736000000
1989-04-01	799000000
1989-07-01	706000000
1989-10-01	724000000
1990-01-01	709000000
1990-04-01	723000000
1990-07-01	738000000
1990-10-01	812000000
1991-01-01	742000000
1991-04-01	792000000
1991-07-01	665000000
1991-10-01	876000000
1992-01-01	613000000
1992-04-01	794000000
1992-07-01	627000000
1992-10-01	811000000
1993-01-01	630000000
1993-04-01	819000000
1993-07-01	704000000
1993-10-01	747000000
1994-01-01	750000000
1994-04-01	841000000
1994-07-01	770000000
1994-10-01	961000000
1995-01-01	981000000
1995-04-01	1403000000
1995-07-01	1091000000
1995-10-01	1313000000
1996-01-01	1221000000
1996-04-01	1491000000
1996-07-01	1178000000
1996-10-01	1590000000
1997-01-01	1419000000
1997-04-01	1707000000
1997-07-01	1459000000
1997-10-01	1749000000
1998-01-01	1698000000
1998-04-01	2094000000
1998-07-01	1836000000
1998-10-01	2685000000
1999-01-01	1909000000
1999-04-01	2606000000
1999-07-01	1721000000
1999-10-01	2169000000
2000-01-01	1762000000
2000-04-01	2936000000
2000-07-01	1863000000
2000-10-01	2236000000
2001-01-01	2027000000
2001-04-01	2634000000
2001-07-01	1611000000
2001-10-01	1576000000
2002-01-01	1481000000
2002-04-01	2396000000
2002-07-01	1133000000
2002-10-01	1457000000
2003-01-01	1750000000
2003-04-01	2589000000
2003-07-01	1154000000
2003-10-01	1357000000
2004-01-01	1995000000
2004-04-01	3113000000
2004-07-01	1798000000
2004-10-01	1422000000
2005-01-01	2690000000
2005-04-01	4361000000
2005-07-01	2626000000
2005-10-01	2318000000
2006-01-01	3647000000
2006-04-01	4600000000
2006-07-01	2941000000
2006-10-01	2826000000
2007-01-01	5202000000
2007-04-01	6208000000
2007-07-01	3343000000
2007-10-01	4027000000
2008-01-01	4509000000
2008-04-01	6430000000
2008-07-01	3478000000
2008-10-01	2801000000
2009-01-01	2967000000
2009-04-01	3804000000
2009-07-01	2506000000
2009-10-01	2960000000
2010-01-01	3201000000
2010-04-01	5177000000
2010-07-01	2773000000
2010-10-01	4188000000
2011-01-01	3290000000
2011-04-01	5574000000
2011-07-01	3197000000
2011-10-01	2782000000
2012-01-01	3404000000
2012-04-01	4732000000
2012-07-01	3488000000
2012-10-01	2919000000
2013-01-01	3219000000
2013-04-01	5893000000
2013-07-01	3216000000
2013-10-01	3570000000