Year current US$ 1985 19999.9995529652 1986 9999.99977648258 1987 39999.9991059303 1988 59999.9986588955 1989 270000.010728836 1990 140000.000596046 1991 349999.99403953605 1992 209999.993443489 1994 0 1995 140000.000596046 2000 50000.0007450581