Year current US$ 1970 19999.9995529652 1971 79999.9982118607 1972 100000.00149011599 1973 129999.99895691921 1974 100000.00335276128 1975 1739999.9462068055 1976 620000.0196695327 1977 259999.9941885469 1978 3100000.087171795 1979 3560000.095516439 1980 6539999.956265096 1981 12010000.057518436 1982 3189999.9920278755 1983 16440000.297501672 1984 8320000.065490613 1985 1199999.9899417157 1986 7200000.135228036 1987 9009999.560192227 1988 2569999.9388307314 1989 11110000.086948277 1990 20520000.969991043 1991 7949999.930337067 1992 5199999.950826167 1993 5509999.776259065 1994 4810000.056400896 1995 5690000.034868714 1996 7200000.032782552 1997 1889999.9558925596 1998 13379999.518394442 1999 4169999.865815048 2000 8630000.310018657 2001 7079999.998211861 2002 3580000.001937154 2003 46829998.731613204 2004 39129999.48672947 2005 32229999.480769057 2006 295059986.1145025 2007 319699995.18804306 2008 279479992.7435813 2009 57890000.26881697 2010 61410001.04695556 2011 100070000.68575151 2012 79789999.88362184 2013 77999998.25283888 2014 45850000.303238675 2015 32800000.03054738 2016 26460001.036524728 2017 63330000.94629818 2018 86580001.35980543 2019 91700000.22277239 2020 48280000.865459524 2021 52830000.09506946 2022 29430000.033229627