Year	US Dollars, Sum Over Component Sub-periods
1972-01-01	-1585000000.000000
1973-01-01	-2139100000.000000
1974-01-01	-2664400000.000000
1975-01-01	-469300000.000000
1976-01-01	-339300000.000000
1977-01-01	-922800000.000000
1978-01-01	-806900000.000000
1979-01-01	-3411300000.000000
1980-01-01	-7034800000.000000
1981-01-01	-4414200000.000000
1982-01-01	-3086800000.000000
1983-01-01	-3982200000.000000
1984-01-01	-4145500000.000000
1985-01-01	-3866300000.000000
1986-01-01	-4364800000.000000
1987-01-01	-5975500000.000000
1988-01-01	-6357300000.000000
1989-01-01	-7388600000.000000
1990-01-01	-7177100000.000000
1991-01-01	-5925500000.000000
1992-01-01	-999700000.000000
1993-01-01	1657400000.000000
1994-01-01	1635600000.000000
1995-01-01	879500000.000000
1996-01-01	927700000.000000
1997-01-01	-313100000.000000
1998-01-01	-1606000000.000000
1999-01-01	-183400000.000000
2000-01-01	-2498100000.000000
2001-01-01	-2756500000.000000
2002-01-01	3266400000.000000
2003-01-01	3211200000.000000
2004-01-01	5395200000.000000
2005-01-01	2411300000.000000
2006-01-01	4041400000.000000
2007-01-01	7812500000.000000
2008-01-01	13941100000.000000
2009-01-01	15141300000.000000
2010-01-01	12640200000.000000
2011-01-01	16233900000.000000
2012-01-01	16540099999.999998
2013-01-01	17963000000.000000