Year US Dollars adjusted for inflation) 1960 1933 1961 1918 1962 1927 1963 1946 1964 1984 1965 1981 1966 2003 1967 1798 1968 1853 1969 1966 1970 1949 1971 1895 1972 1897 1973 1942 1974 2010 1975 1989 1976 2009 1977 2056 1978 2068 1979 2216 1980 2372 1981 2603 1982 3088 1983 3274 1984 3302 1985 3537 1986 3506 1987 3104 1988 2975 1989 2702 1990 2696 1991 2538 1992 2393 1993 2286 1994 2151 1995 2128 1996 2150 1997 2281 1998 2353 1999 2396 2000 2472 2001 2516 2002 2618 2003 2713