Year current US$ 1977 9999.99977648258 1978 19999.9995529652 1979 59999.9986588955 1980 230000.004172325 1981 509999.99046325695 1982 589999.973773956 1983 319999.99284744303 1984 230000.004172325 1985 490000.009536743 1986 579999.983310699 1987 519999.980926514 1988 589999.973773956 1989 649999.976158142 1990 980000.019073486 1991 490000.009536743 1992 610000.014305115 1993 50000.0007450581 1994 140000.000596046 1995 100000.00149011599 1996 59999.9986588955 2000 29999.999329447703 2001 19999.9995529652 2004 29999.999329447703 2005 29999.999329447703 2007 29999.999329447703 2008 59999.9986588955 2009 209999.993443489 2010 1139999.98569489 2011 689999.997615814 2012 4210000.03814697 2013 720000.028610229 2014 9890000.34332275 2015 1059999.9427795399 2016 3180000.0667572 2017 14840000.1525879 2018 20729999.5422363 2019 8600000.38146973 2020 6230000.01907349 2021 15300000.1907349 2022 3240000.00953674