Year Dollars 1979-01-01 5120000000 1980-01-01 11508000000 1981-01-01 26601000000 1982-01-01 2923000000 1983-01-01 -3275000000 1984-01-01 81000000 1985-01-01 -612000000 1986-01-01 1634000000 1987-01-01 -3067000000 1988-01-01 -4495000000 1989-01-01 1110000000 1990-01-01 8441000000 1991-01-01 25139000000 1992-01-01 27039000000 1993-01-01 33760000000 1994-01-01 15786770000 1995-01-01 -10487310000 1996-01-01 13297700000 1997-01-01 24445000000 1998-01-01 19074976262 1999-01-01 14632901840 2000-01-01 19865282194 2001-01-01 28356549885 2002-01-01 23434082254 2003-01-01 21405702099 2004-01-01 14174694456 2005-01-01 16917508326 2006-01-01 -5787353 2007-01-01 25603577236 2008-01-01 28790410647