Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	1313000000
1961-01-01	1384000000
1962-01-01	1410000000
1963-01-01	1616000000
1964-01-01	1703000000
1965-01-01	1637000000
1966-01-01	1548000000
1967-01-01	1632000000
1968-01-01	1782000000
1969-01-01	1843000000
1970-01-01	1884000000
1971-01-01	1963000000
1972-01-01	2393000000
1973-01-01	3003000000
1974-01-01	3648000000
1975-01-01	4684000000
1976-01-01	5414000000
1977-01-01	6253000000
1978-01-01	6516000000
1979-01-01	7601000000
1980-01-01	8300000000
1981-01-01	8432000000
1982-01-01	9227000000
1983-01-01	9765000000
1984-01-01	10164000000
1985-01-01	9470000000
1986-01-01	10255000000
1987-01-01	11883000000
1988-01-01	13506000000
1989-01-01	16143000000
1990-01-01	18279000000
1991-01-01	18008000000
1992-01-01	20020000000
1993-01-01	21973000000
1994-01-01	25523000000
1995-01-01	31284000000
1996-01-01	33736000000
1997-01-01	35693000000
1998-01-01	34045000000
1999-01-01	36881000000
2000-01-01	43290000000
2001-01-01	44774000000
2002-01-01	51134000000
2003-01-01	60815000000
2004-01-01	77930000000
2005-01-01	102180000000
2006-01-01	123813000000
2007-01-01	153391000000
2008-01-01	197189000000
2009-01-01	167908000000
2010-01-01	225230000000