Year	Dollars
1976-01-01	651000000.0000000
1977-01-01	1126000000.0000000
1978-01-01	1856000000.0000000
1979-01-01	-513000000.0000000
1980-01-01	-4774000000.0000000
1981-01-01	-4712000000.0000000
1982-01-01	-2353000000.0000000
1983-01-01	-2436000000.0000000
1984-01-01	-2495000000.0000000
1985-01-01	-952000000.0000000
1986-01-01	-2859000000.0000000
1987-01-01	-4235000000.0000000
1988-01-01	-1572000000.0000000
1989-01-01	-1305000000.0000000
1990-01-01	4552000000.0000000
1991-01-01	-647000000.0000000
1992-01-01	-5547754558.6226883
1993-01-01	-8205889940.1649780
1994-01-01	-10979452970.0946200
1995-01-01	-5117957254.2908325
1996-01-01	-6769978160.4852676
1997-01-01	-12138068595.3394030
1998-01-01	-14481998042.2510620
1999-01-01	-11942825328.0157950
2000-01-01	-8980617892.6276188
2001-01-01	-3780423241.1935940
2002-01-01	8766610000.0000000
2003-01-01	8139930000.0000000
2004-01-01	3211790000.0000000
2005-01-01	5273750000.0000000
2006-01-01	7767040000.0000000
2007-01-01	7354350000.0000000
2008-01-01	6755860000.0000000