Year current US$ 1970 109999.99754130836 1971 129999.9970942735 1972 99999.99776482588 1973 109999.99754130837 1974 89999.99798834324 1975 249999.99254941905 1976 140000.0005960465 1977 179999.9959766866 1978 240000.00022351719 1979 460000.0027567143 1980 520000.00514089974 1981 649999.9929219487 1982 309999.9949336056 1983 539999.9991059299 1984 759999.9923259019 1985 820000.007748604 1986 859999.9975413088 1987 639999.9950081105 1988 759999.9979138372 1989 849999.9940395358 1990 1229999.996721744 1991 1790000.058710571 1992 2550000.011920926 1993 8079999.864101413 1994 3689999.8784065275 1995 3340000.033378603 1996 3460000.023245808 1997 3689999.9938905244 1998 3639999.985694884 1999 2160000.026226043 2000 2090000.033378601 2001 2029999.97138977 2002 1929999.947547913 2003 1939999.9976158137 2004 2329999.9833107 2005 3420000.0166893043 2006 2240000.0095367427 2007 2320000.052452086 2008 2169999.957084655 2009 3120000.004768366 2010 2710000.038146968 2011 3000000.059604644 2012 2377474.1291999808 2013 2792565.226554868 2014 4175866.90187454 2015 4141791.8205261203 2016 4318163.275718688 2017 3316999.971866605 2018 4008235.514163971 2019 4652000.06961823 2020 3881000.1015663133 2021 3122000.038623809 2022 3541000.068187714