Year current US$ 1969 19999.9995529652 1970 59999.9986588955 1971 100000.00149011599 1972 159999.99642372102 1973 70000.0002980232 1974 100000.00149011599 1975 119999.997317791 1976 159999.99642372102 1977 100000.00149011599 1978 100000.00149011599 1979 180000.00715255702 1980 400000.00596046395 1981 259999.990463257 1982 180000.00715255702 1983 119999.997317791 1984 59999.9986588955 1985 129999.995231628 1986 70000.0002980232 1987 550000.011920929 1988 649999.976158142 1989 850000.023841858 1990 670000.016689301 1991 600000.023841858 1992 400000.00596046395 1993 300000.011920929 1994 289999.99165535 1995 300000.011920929 1996 250000 1997 319999.99284744303 1998 379999.99523162795 1999 70000.0002980232 2000 400000.00596046395 2002 70000.0002980232 2011 200000.00298023198 2012 138713.04690837898 2013 21180.000156164202 2014 149737.372994423 2015 30407.609418034597 2017 33.6999983119313 2018 36257.2707235813