Quarter	US Dollars, Sum Over Component Sub-periods
1981-01-01	166000000
1981-04-01	119000000
1981-07-01	157000000
1981-10-01	204000000
1982-01-01	203000000
1982-04-01	165000000
1982-07-01	162000000
1982-10-01	254000000
1983-01-01	190000000
1983-04-01	146000000
1983-07-01	127000000
1983-10-01	230000000
1984-01-01	133000000
1984-04-01	162000000
1984-07-01	136000000
1984-10-01	203000000
1985-01-01	152000000
1985-04-01	107000000
1985-07-01	174000000
1985-10-01	238000000
1986-01-01	195000000
1986-04-01	196000000
1986-07-01	211000000
1986-10-01	321000000
1987-01-01	220000000
1987-04-01	264000000
1987-07-01	238000000
1987-10-01	383000000
1988-01-01	238000000
1988-04-01	211000000
1988-07-01	264000000
1988-10-01	437000000
1989-01-01	211000000
1989-04-01	243000000
1989-07-01	228000000
1989-10-01	442000000
1990-01-01	257000000
1990-04-01	266000000
1990-07-01	278000000
1990-10-01	633000000
1991-01-01	267000000
1991-04-01	287000000
1991-07-01	286000000
1991-10-01	628000000
1992-01-01	559000000
1992-04-01	664000000
1992-07-01	617000000
1992-10-01	1272000000
1993-01-01	537000000
1993-04-01	581000000
1993-07-01	604000000
1993-10-01	1135000000
1994-01-01	709000000
1994-04-01	680000000
1994-07-01	753000000
1994-10-01	893000000
1995-01-01	771000000
1995-04-01	763000000
1995-07-01	744000000
1995-10-01	1060000000
1996-01-01	637000000
1996-04-01	648000000
1996-07-01	647000000
1996-10-01	901000000
1997-01-01	694000000
1997-04-01	676000000
1997-07-01	641000000
1997-10-01	851000000
1998-01-01	692000000
1998-04-01	707000000
1998-07-01	702000000
1998-10-01	955000000
1999-01-01	754000000
1999-04-01	724000000
1999-07-01	814000000
1999-10-01	852000000
2000-01-01	742000000
2000-04-01	631000000
2000-07-01	653000000
2000-10-01	884000000
2001-01-01	772000000
2001-04-01	812000000
2001-07-01	775000000
2001-10-01	1040000000
2002-01-01	789000000
2002-04-01	945000000
2002-07-01	954000000
2002-10-01	1422000000
2003-01-01	1202000000
2003-04-01	1132000000
2003-07-01	1039000000
2003-10-01	1601000000
2004-01-01	1105000000
2004-04-01	1199000000
2004-07-01	1315000000
2004-10-01	1570000000
2005-01-01	1149000000
2005-04-01	1493000000
2005-07-01	1402000000
2005-10-01	2048000000
2006-01-01	1029000000
2006-04-01	1170000000
2006-07-01	1410000000
2006-10-01	2024000000
2007-01-01	1181000000
2007-04-01	1361000000
2007-07-01	1687000000
2007-10-01	2610000000
2008-01-01	1369000000
2008-04-01	1718000000
2008-07-01	1527000000
2008-10-01	2512000000
2009-01-01	1273000000
2009-04-01	1528000000
2009-07-01	1783000000
2009-10-01	3224000000
2010-01-01	1657000000
2010-04-01	1721000000
2010-07-01	1560000000
2010-10-01	3488000000
2011-01-01	2014000000
2011-04-01	1958000000
2011-07-01	1702000000
2011-10-01	3805000000
2012-01-01	2203000000
2012-04-01	1969000000
2012-07-01	1926000000
2012-10-01	2707000000
2013-01-01	2353000000
2013-04-01	2518000000
2013-07-01	2321000000
2013-10-01	3558000000
2014-01-01	2491000000
2014-04-01	2126000000