Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	-4992700000.000000
1981-01-01	-3864400000.000000
1982-01-01	-2114500000.000000
1983-01-01	-1522300000.000000
1984-01-01	-401700000.000000
1985-01-01	-1648300000.000000
1986-01-01	4348700000.000000
1987-01-01	10670400000.000000
1988-01-01	14663100000.000000
1989-01-01	5317200000.000000
1990-01-01	-1567900000.000000
1991-01-01	-7709400000.000000
1992-01-01	-1872500000.000000
1993-01-01	2894400000.000000
1994-01-01	-3737800000.000000
1995-01-01	-8189800000.000000
1996-01-01	-22452800000.000000
1997-01-01	-8418200000.000001
1998-01-01	42646200000.000000
1999-01-01	24206500000.000000
2000-01-01	15099900000.000000
2001-01-01	8308200000.000001
2002-01-01	7322400000.000000
2003-01-01	15605900000.000000
2004-01-01	33445900000.000000
2005-01-01	18274600000.000000
2006-01-01	13548100000.000000
2007-01-01	22111500000.000000
2008-01-01	4659800000.000000
2009-01-01	31246600000.000000
2010-01-01	27451700000.000000
2011-01-01	25102300000.000000
2012-01-01	48582900000.000000
2013-01-01	70495400000.000000