Year current US$ 1969 409999.99642372096 1970 899999.976158142 1971 1169999.95708466 1972 2079999.9237060498 1973 3000000 1974 4739999.771118159 1975 4570000.17166138 1976 6590000.15258789 1977 10590000.1525879 1978 8710000.03814697 1979 4630000.11444092 1980 1970000.02861023 1981 2160000.08583069 1982 9010000.22888184 1983 4989999.771118159 1984 5500000 1985 12340000.1525879 1986 10109999.6566772 1987 4539999.96185303 1988 18809999.4659424 1989 5690000.05722046 1990 4840000.15258789 1991 4480000.01907349 1992 2150000.09536743 1993 1879999.99523163 1994 1120000.00476837 1995 2180000.0667572 1996 540000.021457672 1998 50000.0007450581 2013 12271536.8270874 2014 20948480.6060791 2015 9489762.30621338 2016 2560013.0558013897 2017 2752049.92294312 2019 4170.00008746982 2021 186670.00532150298 2022 3962809.08584595