Year	current US$
1960	5501997.79920088
1961	5501997.79920088
1962	5501997.79920088
1963	5501997.79920088
1964	5501997.79920088
1965	5501997.79920088
1966	10667995.732801707
1967	13537994.584802166
1968	15833993.666402534
1969	21742857.14285714
1970	26600000
1971	29444945.246991046
1972	30658476.7464766
1973	33511104.03566027
1974	31723590.150913425
1975	35965051.62827641
1976	53566307.2279587
1977	23405804.05797101
1978	20787286.187845305
1979	29265098.16272966
1980	26892746.18672041
1981	29549778.05960685
1982	37862865.231620684
1983	32909060.458884608
1984	35480266.53849073
1985	41583054.89566613
1986	48151879.373408444
1987	50363479.050766006
1988	52898365.21230297
1989	47446109.09090909
1990	40602926.66831921