Year current US$ 1969 9999.99977648258 1970 19999.9995529652 1971 39999.9991059303 1972 19999.9995529652 1973 9999.99977648258 1974 9999.99977648258 1975 9999.99977648258 1976 19999.9995529652 1977 19999.9995529652 1978 9999.99977648258 1979 9999.99977648258 1980 150000.005960464 1981 79999.9982118607 1982 209999.993443489 1983 1019999.98092651 1984 170000.00178813902 1985 109999.999403954 1986 159999.99642372102 1987 629999.995231628 1988 140000.000596046 1989 189999.99761581398 1990 109999.999403954 1991 100000.00149011599 1992 140000.000596046 1993 90000.0035762787 1994 29999.999329447703 1995 90000.0035762787 1996 -109999.999403954 1997 7239999.771118159 1998 90000.0035762787 1999 -79999.9982118607 2001 379999.99523162795 2002 939999.997615814 2003 2140000.10490417 2004 1929999.94754791 2005 2400000.09536743 2006 2930000.0667572 2007 4480000.01907349 2008 3549999.95231628 2009 8880000.11444092 2010 4280000.20980835 2011 3750000 2012 3829999.92370605 2013 2390000.10490417 2014 1750000 2015 920000.016689301 2016 479999.989271164 2017 140000.000596046 2018 209999.993443489