Year	current US$
1960	116298011.72079532
1961	122976004.56959818
1962	132188000.88479964
1963	138404016.31839347
1964	148077990.04880401
1965	154615938.15362474
1966	159235945.2656219
1967	162077930.68882772
1968	156631937.34722507
1969	164657152
1970	170028580.57142857
1971	167116542.7846698
1972	227675005.82009634
1973	273230921.2767651
1974	178856240.1906275
1975	346497077.680699
1976	411818883.55837965
1977	278840653.91304344
1978	310635491.71270716
1979	301509106.5616798
1980	388485448.0386366
1981	438839583.005707
1982	487587478.1683208
1983	446470431.0835706
1984	513445811.63196635
1985	557614351.2038523
1986	545551420.4491087
1987	619705630.3995194
1988	692619683.502176
1989	663737925.9020619
1990	575395413.5132141