Year	current US$
1970	16062332.577786935
1971	14870294.210692817
1972	15157628.262826283
1973	16543708.532184845
1974	21785499.498830605
1975	15912417.717282161
1976	20348278.2995052
1977	22970011.18227102
1978	31901414.726523336
1979	40478323.35329341
1980	58609495.40144171
1981	66565830.37300177
1982	98570104.16666667
1983	50378338.13163903
1984	48760499.115373865
1985	50140373.35285505
1986	59504260.43259777
1987	47931908.54870775
1988	87050733.09977941
1989	95540034.491254
1990	130738214.2374713
1991	140060956.1752988
1992	93792165.83658636
1993	99281302.63896687
1994	126480858.79813701
1995	55265077.82101167
1996	54428299.19009052
1997	52481370.25914804
1998	57043872.251077466
1999	48670899.698665515
2000	160563595.73183715
2001	-20164120.381317947
2002	8456660.282549342
2003	76152843.04166098
2004	168877515.76355758
2005	293944409.3170414
2006	67218086.12295997
2007	33120522.483294692
2008	182373863.08398566
2009	150246963.37069604
2010	133397930.11596707
2011	-17089907.39283505
2012	-48099375.49282741
2013	-65228956.96272637
2014	-136391870.6366709
2015	-28257176.33274751
2016	50018363.53150967
2017	75893671.32625648
2018	51002144.75005781
2019	111462639.34873769
2020	214776825.3881333
2021	132973138.53818832
2022	137192700.83930692
2023	153092932.81734788