Year	current US$
1970	2751259994.015098
1971	3017749999.372287
1972	2950539992.563426
1973	3267550008.5912647
1974	3834239990.023897
1975	5042290002.157911
1976	4786970006.717369
1977	4901189998.146147
1978	6481239996.831864
1979	8205139975.1789875
1980	8816320032.015442
1981	8874869999.250399
1982	8748989981.25829
1983	8957280024.77996
1984	9348789998.218418
1985	10507730011.032896
1986	12515219993.615524
1987	12921770031.182095
1988	14511729938.04701
1989	14231919993.905348
1990	17283539990.155033
1991	21917630049.461502
1992	19612689971.43768
1993	16589400050.32346
1994	18344299959.300087
1995	16582370001.887903
1996	17618730078.88161
1997	13962810018.554327
1998	14999559987.999504
1999	14936080012.332647
2000	13835929953.375832
2001	14412280045.120049
2002	14573669956.40099
2003	16173200094.025589
2004	15053809928.584843
2005	17947060036.96099
2006	16871479964.032772
2007	18585720075.141636
2008	23843009949.274364
2009	24097140007.68401
2010	27565460019.355656
2011	29093379882.480946
2012	26362190093.740826
2013	31277979982.940487
2014	28834580193.39853
2015	27126489898.774773
2016	30694070039.50329
2017	32405660080.624763
2018	32748710070.556034
2019	32119070069.86627
2020	36393500096.39934
2021	40162740095.457054
2022	34885149905.966606