Year current US$ 1978 150000.005960464 1980 239999.994635582 1981 730000.019073486 1982 1809999.9427795399 1983 11659999.8474121 1984 12000000 1985 11000000 1986 13800000.1907349 1987 15069999.6948242 1988 13960000.038146999 1989 13539999.961853001 1990 11390000.3433228 1991 2009999.9904632599 1992 1299999.95231628 1993 500000 1994 70000.0002980232 1995 70000.0002980232 1996 50000.0007450581 2020 260181.933641434 2021 4801310.06240845 2022 1588700.05607605