Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	792550000.0000000
1961-01-01	684640000.0000000
1962-01-01	763470000.0000000
1963-01-01	745400000.0000000
1964-01-01	1072060000.0000000
1965-01-01	1238600000.0000000
1966-01-01	959100000.0000000
1967-01-01	1212420000.0000000
1968-01-01	914360000.0000000
1969-01-01	294430000.0000000
1970-01-01	502720000.0000000
1971-01-01	839730000.0000000
1972-01-01	602910000.0000000
1973-01-01	752690000.0000000
1974-01-01	-631330000.0000000
1975-01-01	589200000.0000000
1976-01-01	-1289480000.0000000
1977-01-01	-1666260000.0000000
1978-01-01	-1124540000.0000000
1979-01-01	-353630000.0000000
1980-01-01	2157060000.0000000
1981-01-01	3025910000.0000000
1982-01-01	2151590000.0000000
1983-01-01	2782920000.0000000
1984-01-01	1937800000.0000000
1985-01-01	3637440000.0000000
1986-01-01	4371780000.0000000
1987-01-01	5579760000.0000000
1988-01-01	7235240000.0000000
1989-01-01	7103690000.0000000
1990-01-01	7609590000.0000000
1991-01-01	3662670000.0000000
1992-01-01	3301760000.0000000
1993-01-01	2844910000.0000000
1994-01-01	74200000.0000000
1995-01-01	4734130000.0000000
1996-01-01	7877070000.0000000
1997-01-01	4260569999.9999995
1998-01-01	5518800000.0000000
1999-01-01	3222670000.0000000
2000-01-01	4270000000.0000000
2001-01-01	-694890000.0000000
2002-01-01	-6868810000.0000000
2003-01-01	-9242510000.0000000
2004-01-01	-1372060000.0000000
2005-01-01	10824560000.0000000
2006-01-01	8399400000.0000000
2007-01-01	6737300000.0000000
2008-01-01	29826230000.0000000
2009-01-01	26347820000.0000000
2010-01-01	55376720000.0000000