Year	current US$
1960	422303067.2268908
1961	397732379.894958
1962	398590401.83127564
1963	319557568.5210084
1964	322401283.94957983
1965	439915966.38655466
1966	391806722.68907565
1967	380452674.89711934
1968	371463229.31092435
1969	361512605.0420168
1970	584537815.1260504
1971	583136593.5919056
1972	570184254.6063652
1973	700156250
1974	944812030.0751879
1975	1042225392.296719
1976	1043162901.3079667
1977	1387936865.83991
1978	950352338.244715
1979	1134232498.3943481
1980	1296672716.273442
1981	1345038961.038961
1982	1304565112.9264777
1983	1360645983.8504038
1984	1740762578.616352
1985	1555117820.3240058
1986	1519200571.0206995
1987	1683389945.6521738
1988	1819710782.772713
1989	1904743411.9278781
1990	2424288567.149276
1991	2586802030.456853
1992	3082683093.7713895
1993	3494577814.569536
1994	3962059894.7794414
1995	4638263414.634147
1996	4860502985.344671
1997	5514301315.4772
1998	5724701318.851823
1999	5555445147.225368
2000	6371581612.777561
2001	5879570277.529096
2002	5773455293.748693
2003	6543193120.596767
2004	7300256942.385612
2005	7892069651.741294
2006	8520287929.938057
2007	9418771913.852852
2008	10113919886.637741
2009	8972038339.486881
2015	16937417044.063118
2016	17447586546.731876
2017	19086839119.088757
2018	20265390542.701916
2019	19426213079.895836
2020	13031457073.18072
2021	14993955151.906052
2022	15984909594.990736
2023	17202069042.792927