Year	current US$
1970	922550006.9409611
1971	1039959996.7058743
1972	1193250011.3248823
1973	1428720004.3145564
1974	2266390011.7278094
1975	3127549972.474575
1976	2927890012.74109
1977	3454510001.1825547
1978	4611820029.25873
1979	6018679977.178574
1980	6864290012.121202
1981	6544900001.049044
1982	6716759963.989262
1983	6574869944.572451
1984	6746660032.272342
1985	7859559928.894045
1986	9792589945.316317
1987	11178219938.2782
1988	12691859985.351566
1989	13112279960.632326
1990	15708499908.447266
1991	16411240013.122564
1992	16933370029.44948
1993	15138549850.463875
1994	17237569751.739513
1995	17252320037.841797
1996	14709710037.231447
1997	12841659961.70044
1998	12875469957.351692
1999	12341400020.59937
2000	11692290056.228638
2001	14053620004.65393
2002	18130270151.138313
2003	24043109851.83717
2004	25669960058.212303
2005	26700920196.533226
2006	30235519884.10951
2007	34744060176.84938
2008	37349889717.10206
2009	41517110107.42191
2010	43968599628.448494
2011	44151809989.92922
2012	42273160091.40016
2013	40595750022.88821
2014	38432340305.32837
2015	37405099853.51564
2016	36607340133.66701
2017	39757549804.68754
2018	41128560134.88771
2019	42275679840.08792
2020	54291840053.558395
2021	49608640026.092575