Year current US$ 1969 39999.9991059303 1970 39999.9991059303 1973 70000.0002980232 1974 119999.997317791 1975 200000.00298023198 1976 370000.00476837205 1977 219999.998807907 1978 289999.99165535 1979 439999.997615814 1980 469999.998807907 1981 379999.99523162795 1982 259999.990463257 1983 379999.99523162795 1984 170000.00178813902 1985 209999.993443489 1986 340000.00357627904 1987 500000 1988 379999.99523162795 1989 319999.99284744303 1990 300000.011920929 1991 379999.99523162795 1992 39999.9991059303 1993 219999.998807907 1994 239999.994635582 1995 230000.004172325 1996 219999.998807907 1997 230000.004172325 1998 19999.9995529652 1999 39999.9991059303 2000 29999.999329447703 2002 9999.99977648258 2003 39999.9991059303 2011 70000.0002980232 2012 16006.620600819602 2013 37999.998778104804 2015 13838.3703306317 2016 85330.4788470268 2017 81542.53661632541