Year	current US$
1970	1213290106.23114
1971	890970792.72753
1972	778565511.845238
1973	522994765.370952
1974	738211635.968115
1975	856628396.882715
1976	990631655.389588
1977	1220460848.86652
1978	1289289651.16296
1979	1419123326.28773
1980	1702885344.48088
1981	2075501104.5647
1982	2286425009.0225
1983	2137300802.38236
1984	2364931086.88637
1985	2383575232.72176
1986	2455723341.9331
1987	2578832737.27614
1988	2922958615.34981
1989	3018487676.02001
1990	3045914155.51127
1991	3575082857.95798
1992	4232695069.57299
1993	4379835871.76741
1994	4405892875.92018
1995	5080574036.70637
1996	5365528861.41115
1997	5391343610.56396
1998	5497361623.97657
1999	5352501101.75201
2000	7436039946.96138
2001	7091364033.50925
2002	7081832713.70482
2003	7751068416.41946
2004	8727085248.20439
2005	9624740586.94463
2006	10956725407.0683
2007	11649207892.2037
2008	12138342990.5944
2009	10347479828.9322
2010	10190779906.7198
2011	10539718558.8053
2012	10855320525.815
2013	10680328384.4321
2014	10665445332.7107
2015	11775153199.2445
2016	13839420128.31
2017	15017055498.344
2018	15750765398.1918
2019	13631040719.3243
2020	12768511600.5448
2021	13729386210.8204