Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	466070000.00000000
1961-01-01	526820000.00000006
1962-01-01	741260000.00000000
1963-01-01	912890000.00000000
1964-01-01	927110000.00000000
1965-01-01	1037400000.00000010
1966-01-01	891040000.00000000
1967-01-01	863640000.00000000
1968-01-01	610390000.00000000
1969-01-01	1006330000.00000000
1970-01-01	1128500000.00000000
1971-01-01	955420000.00000000
1972-01-01	744270000.00000000
1973-01-01	2209400000.00000000
1974-01-01	2147070000.00000020
1975-01-01	343090000.00000000
1976-01-01	1113750000.00000000
1977-01-01	-1447810000.00000000
1978-01-01	-843870000.00000000
1979-01-01	-999800000.00000000
1980-01-01	-5462110000.00000000
1981-01-01	-3915620000.00000000
1982-01-01	-4245319999.99999950
1983-01-01	-1726310000.00000000
1984-01-01	-558830000.00000000
1985-01-01	-3501760000.00000000
1986-01-01	-124600000.00000000
1987-01-01	-1478030000.00000000
1988-01-01	-2227150000.00000000
1989-01-01	-4002200000.00000000
1990-01-01	-9226860000.00000000
1991-01-01	-11164340000.00000000
1992-01-01	-3220820000.00000000
1993-01-01	-5082290000.00000000
1994-01-01	540360000.00000000
1995-01-01	-3100850000.00000000
1996-01-01	-5307270000.00000000
1997-01-01	-1901720000.00000000
1998-01-01	17059029999.99999800
1999-01-01	-6546000000.00000000
2000-01-01	-431440000.00000000
2001-01-01	8398520000.00000000
2002-01-01	23353360000.00000000
2003-01-01	27004040000.00000000
2004-01-01	33739070000.00000000
2005-01-01	43202820000.00000000
2006-01-01	15909620000.00000000
2007-01-01	37989140000.00000000
2008-01-01	59534930000.00000000
2009-01-01	28663020000.00000000
2010-01-01	20711630000.00000000
2011-01-01	36059090000.00000000
2012-01-01	-6054730000.00000000
2013-01-01	-26055670000.00000000