Year current US$ 1970 39999.99910593036 1971 29999.99932944774 1972 29999.99932944774 1973 49999.99888241294 1974 49999.9988824129 1975 89999.99798834327 1976 149999.99664723864 1977 209999.9990314243 1978 369999.997317791 1979 309999.99307095964 1980 299999.9970197677 1981 199999.99552965164 1982 439999.9938905236 1983 739999.9927729361 1984 739999.985322356 1985 419999.9924749136 1986 379999.9915063378 1987 149999.99664723882 1988 279999.9956041573 1989 199999.9955296517 1990 99999.999627471 1991 199999.99552965167 1992 129999.99895691876 1993 169999.99806284957 1994 139999.99687075627 1998 29999.999329447703 2000 39999.999105930365 2001 29999.999329447703 2003 9999.99977648258 2004 50000.0007450581 2005 59999.998658895565 2006 539999.9953806415 2008 39999.9991059303 2009 119999.997317791 2010 4159999.981522561 2011 11829999.983310698 2012 2800000.030547379 2013 2089999.9700486653 2014 2499999.9962747097 2015 1499999.985098838 2016 719999.9988079072 2017 4479999.855160711 2018 1270000.0070035453 2019 419999.9943375589 2020 59999.998658895485 2021 229999.9967217446 2022 129999.99895691867