Year current US$ 1970 530000.004917383 1971 709999.9971687783 1972 610000.0012665978 1973 560000.0154227015 1974 689999.9845772979 1975 1400000.0339001415 1976 1109999.984502793 1977 459999.9859929083 1978 770000.0070035466 1979 679999.9959766861 1980 749999.9888241293 1981 789999.9935179953 1982 899999.9873340132 1983 1170000.0222772348 1984 1040000.0028312198 1985 2269999.980926516 1986 1899999.987334012 1987 1589999.984949827 1988 7660000.152885909 1989 9339999.951422222 1990 7729999.836534256 1991 4679999.902844428 1992 3859999.999403954 1993 7279999.978840353 1994 2719999.90940094 1995 11780000.030994426 1996 3319999.9425560227 1997 3399999.97615814 1998 799999.9932944778 1999 1039999.9897927077 2000 100000.0014901162 2001 200000.00298023198 2005 239999.994635582 2006 170000.00178813902 2007 29999.999329447703 2008 19999.9995529652