Year current US$ 1970 80000.0000745059 1971 139999.99687075615 1972 160000.00201165676 1973 710000.0213831664 1974 710000.0064820051 1975 779999.9974668026 1976 820000.0002980235 1977 1419999.9812990418 1978 2309999.968856577 1979 3780000.0086426744 1980 3569999.990984796 1981 4359999.941661955 1982 5699999.999254949 1983 5479999.916627994 1984 7160000.018775467 1985 6820000.113919377 1986 10349999.992176896 1987 15890000.2501905 1988 10590000.13768673 1989 11540000.071749087 1990 16459999.93570149 1991 16950000.345706936 1992 15559999.711811535 1993 16270000.172778968 1994 15890000.000596046 1995 14300000.088289384 1996 11849999.96237456 1997 14009999.774396412 1998 8079999.960958954 1999 6199999.790638685 2000 13309999.7472018 2001 13500000.219792137 2002 9440000.118687741 2003 10970000.153407447 2004 7949999.967589971 2005 7520000.111311668 2006 8920000.014826654 2007 8110000.012442475 2008 8389999.886974689 2009 12650000.14379621 2010 9830000.191926949 2011 8060000.106692311 2012 7710000.051185486 2013 15969999.931752667 2014 3109999.9845027933 2015 2180000.0816583666 2016 1020000.036805867 2017 1709999.984130266 2018 1629999.9952316266 2019 6619999.758899212 2020 669999.9999254949 2021 1870000.0382959829 2022 469999.99508261716