Year	current US$
1970	2265886404.681572
1971	2503436840.091271
1972	3004917883.488662
1973	3989212251.5522566
1974	4970124735.996534
1975	5854713118.674549
1976	5965179144.140017
1977	6648633417.864187
1978	6893729851.401102
1979	8336920676.921862
1980	8668610301.263363
1981	7871940064.465547
1982	7452432599.938024
1983	7136670138.698536
1984	7286773264.718495
1985	7439282557.111617
1986	9167917562.578604
1987	11055139146.567719
1988	12203007518.796991
1989	11447316967.195309
1990	12353147914.436794
1991	12133767295.500471
1992	13067181591.439375
1993	12295569557.801554
1994	13173175017.002947
1995	16414477838.110872
1996	16456479270.67506
1997	16181751350.12865
1998	16253462512.093943
1999	16432069955.892912
2000	15387761594.219364
2001	15730840664.168066
2002	17644229564.868862
2003	20586989068.105423
2004	22912117256.112034
2005	25515560729.53046
2006	28979620476.197903
2007	33627445962.775303
2008	36333687943.26241
2009	28991301305.59929
2010	31370412243.20969
2011	34249143515.971783
2012	34391749033.08981
2013	35292255319.14893
2014	34555144141.76142
2015	27022010953.807987
2016	24741666666.666664
2017	26023775941.970573
2018	26844635720.87304
2019	25652954545.454544
2020	24219417647.57944
2021	28265541327.124565
2022	29302383635.260456
2023	29455096244.87229