Year	US Dollars, Sum Over Component Sub-periods
1970-01-01	170610000.00000000
1971-01-01	238260000.00000000
1972-01-01	566460000.00000000
1973-01-01	680630000.00000000
1974-01-01	568100000.00000000
1975-01-01	1059180000.00000010
1976-01-01	704980000.00000000
1977-01-01	605960000.00000000
1978-01-01	500030000.00000000
1979-01-01	-566860000.00000000
1980-01-01	-781620000.00000000
1981-01-01	-640220000.00000000
1982-01-01	-319790000.00000000
1983-01-01	-617770000.00000000
1984-01-01	-562600000.00000000
1985-01-01	-1166520000.00000000
1986-01-01	-1267040000.00000000
1987-01-01	-1446810000.00000000
1988-01-01	-2291870000.00000000
1989-01-01	-1405360000.00000000
1990-01-01	-412100000.00000000
1991-01-01	-821280000.00000000
1992-01-01	-131960000.00000001
1993-01-01	-83180000.00000000
1994-01-01	237480000.00000000
1995-01-01	1118810000.00000000
1996-01-01	1972630000.00000000
1997-01-01	3256880000.00000000
1998-01-01	2513530000.00000000
1999-01-01	2569460000.00000000
2000-01-01	-2108199999.99999980
2001-01-01	-2466350000.00000000
2002-01-01	-1042160000.00000010
2003-01-01	-696820000.00000000
2004-01-01	4259609999.99999950
2005-01-01	6796510000.00000000
2006-01-01	9365920000.00000000
2007-01-01	12140420000.00000000
2008-01-01	13011890000.00000000
2009-01-01	7909000000.00000000
2010-01-01	10546410000.00000000
2011-01-01	12168520000.00000000
2012-01-01	9769720000.00000000
2013-01-01	18321710000.00000000