Year	current US$
1970	1259639992.0564148
1971	1282559996.511787
1972	1403440010.1043286
1973	1363499981.8652873
1974	1991620005.9354315
1975	1969769988.4623303
1976	1785529992.4463046
1977	2572950022.801758
1978	2822719962.5298386
1979	3046390002.98083
1980	4015789984.4329786
1981	4650939958.18496
1982	4063769998.9974504
1983	3771630001.3661375
1984	3884469947.2785
1985	4500819984.376431
1986	4614880036.950116
1987	5396290083.050728
1988	5849999941.349033
1989	6238660048.007968
1990	9895519989.728931
1991	11803880074.63515
1992	12471290000.91554
1993	12364239825.487139
1994	13452010123.49129
1995	16233419825.792324
1996	11945289938.494566
1997	10239610034.346582
1998	12443299929.94667
1999	14637750046.610834
2000	13350510052.08493
2001	12379270186.513666
2002	13246289935.231215
2003	13508549889.057884
2004	15635320041.17968
2005	10314519943.714153
2006	11535379981.040964
2007	12063149797.439583
2008	13237310021.400452
2009	13566290091.514603
2010	11753110192.775734
2011	13484350044.25049
2012	14763570176.12458
2013	13465340082.168577
2014	14801220124.244688
2015	12562679975.390446
2016	12084700069.427494
2017	12768990048.408512
2018	9824989892.005938
2019	8129200014.352802
2020	13236670042.514805
2021	12130620089.221748