Year current US$ 1970 179999.9959766861 1971 120000.0010430812 1972 180000.0015646216 1973 210000.00275671456 1974 180000.0015646216 1975 129999.99709427358 1976 210000.00089406932 1977 180000.0015646216 1978 339999.9998509885 1979 539999.9991059302 1980 240000.00208616228 1981 619999.9824166293 1982 469999.9876320361 1983 510000.00536441803 1984 160000.0057369466 1985 620000.004768371 1986 400000.0134110453 1987 690000.027418136 1988 439999.99389052344 1989 630000.010132789 1990 1029999.9639391903 1991 1089999.9812245371 1992 820000.0040233124 1993 1159999.9964237206 1994 1670000.0166892991 1995 2880000.0101327905 1996 2270000.044256448 1997 2650000.0134110446 1998 2799999.997019767 1999 2559999.9874830246 2000 2070000.052452088 2001 2199999.98807907 2002 2279999.986290931 2003 2180000.007152557 2004 2310000.0396370897