Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	0.0000000
1981-01-01	-38700000.0000000
1982-01-01	-101100000.0000000
1983-01-01	-85300000.0000000
1984-01-01	-90200000.0000000
1985-01-01	-100800000.0000000
1986-01-01	-102200000.0000000
1987-01-01	-214500000.0000000
1988-01-01	-359200000.0000000
1989-01-01	-326600000.0000000
1990-01-01	-338200000.0000000
1991-01-01	-336100000.0000000
1992-01-01	-412400000.0000000
1993-01-01	-476800000.0000000
1994-01-01	-444500000.0000000
1995-01-01	-502100000.0000000
1996-01-01	-616500000.0000000
1997-01-01	-624200000.0000000
1998-01-01	-292500000.0000000
1999-01-01	-484400000.0000000
2000-01-01	-713000000.0000000
2001-01-01	-773400000.0000000
2002-01-01	-1133300000.0000000
2003-01-01	-1456900000.0000000
2004-01-01	-1824500000.0000000
2005-01-01	-2487200000.0000000
2006-01-01	-3416200000.0000000
2007-01-01	-2913500000.0000000
2008-01-01	-1754100000.0000000
2009-01-01	-1565900000.0000000
2010-01-01	-2108100000.0000000
2011-01-01	-2285400000.0000000
2012-01-01	-2097699999.9999998