Year	current US$
1960	240474815.87395778
1961	234492855.2800779
1962	241671207.992734
1963	269188226.7245796
1964	273973795.1996832
1965	331400616.90092677
1966	421130025.80912083
1967	454629005.1348462
1968	534787277.0928317
1969	612552764.8132659
1970	679550723.4647168
1971	778851341.2961781
1972	914043578.7447947
1973	1014389652.0266426
1974	528013618.94161034
1975	995795565.8973551
1976	1377356285.717431
1977	2399882513.239165
1978	2269686141.0456333
1979	61725175.50718994
1980	2042345399.0164862
1981	1415564481.3199794
1982	2193446939.4026313
1983	4635854871.988834
1984	5535110051.181759
1985	6276405086.016026
1986	7256055684.785109
1987	4158909495.0788765
1988	2803281451.9301004
1989	3032300884.9557524
1990	2659135789.082856
1993	-46426426.426426426
1994	-620565552.6992288
1995	-1102247191.011236
1996	-277693677.64915407
1997	327109192.3007735
1998	190985651.90268248
1999	537015819.7507191
2000	694451230.151806
2001	1222914192.6447842
2002	1186369968.2834883
2003	1728021601.3649976
2004	697971582.1100452
2005	-3441530944.9935117
2006	-4868588565.4134865
2007	-1699427135.0027914
2008	-654516890.2658966
2009	3475902141.8899107
2010	4389598401.2140045
2011	2516476863.3021736
2012	4378046093.824327
2013	3963443659.3781996
2014	9381024744.810436
2015	10416375055.465376
2016	15230165177.320332
2017	15966104501.834053
2018	10690983552.686829
2019	9231686872.789576
2020	5876312009.091262
2021	8130644257.396607
2022	10007807447.279516
2023	9753668879.77125