Year Dollars 1974-01-01 0 1975-01-01 0 1976-01-01 0 1977-01-01 0 1978-01-01 0 1979-01-01 0 1980-01-01 0 1981-01-01 0 1982-01-01 0 1983-01-01 0 1984-01-01 0 1985-01-01 0 1986-01-01 0 1987-01-01 0 1988-01-01 0 1989-01-01 23000000 1990-01-01 0 1991-01-01 0 1992-01-01 0 1993-01-01 0 1994-01-01 0 1995-01-01 0 1996-01-01 0 1997-01-01 0 1998-01-01 0 1999-01-01 0 2000-01-01 0 2001-01-01 0 2002-01-01 0 2003-01-01 0 2004-01-01 0 2005-01-01 0 2006-01-01 0 2007-01-01 -8000000 2008-01-01 -61000000