Year current US$ 1966 19999.9995529652 1967 9999.99977648258 1968 29999.999329447703 1969 29999.999329447703 1970 19999.9995529652 1971 19999.9995529652 1972 19999.9995529652 1973 140000.000596046 1974 70000.0002980232 1975 129999.995231628 1976 219999.998807907 1977 70000.0002980232 1978 19999.9995529652 1979 59999.9986588955 1980 230000.004172325 1981 109999.999403954 1982 9999.99977648258 1983 9999.99977648258 1984 9999.99977648258 1985 59999.9986588955 1987 19999.9995529652 1988 70000.0002980232 1989 50000.0007450581 1990 259999.990463257 1991 39999.9991059303 1992 319999.99284744303 1993 9999.99977648258 1994 0 2008 200000.00298023198 2009 180000.00715255702 2010 230000.004172325 2011 409999.99642372096 2013 270000.010728836 2017 209999.993443489 2018 79999.9982118607 2019 2390000.10490417 2020 100000.00149011599 2021 910000.026226044 2022 100000.00149011599