Year	current US$
1970	53119827.1093846
1971	38780336.4841185
1972	41088699.7373341
1973	106582064.678778
1974	137676759.849376
1975	50497583.5945801
1976	54639510.3846094
1977	41158759.83931
1978	40782710.2961783
1979	62404404.8568038
1980	83010505.8615755
1981	61100241.3441843
1982	44883409.1319778
1983	60105154.3893743
1984	49164108.8482111
1985	44430379.2124925
1986	34155308.6483609
1987	59184479.5768524
1988	113676209.419765
1989	129659175.927333
1990	89492911.0985794
1991	15599848.6374122
1992	5144629.76671148
1993	1758320.71443569
1994	4181022.61868651
1995	3053946.05046755
1996	4944818.15763396
1997	1827528.4587998
1998	1365857.58063065
1999	1388546.97800488
2000	1068927.43218809
2001	651360.460637986
2002	559416.439202509
2003	9514016.15344092
2004	11335233.2372036
2005	36796864.170256
2006	195533210.773861
2007	116342968.267517
2008	313056973.675136
2009	303966515.561296
2010	639788429.44637
2011	1357767128.95889
2012	1367844780.32081
2013	1803010501.46983
2014	1813307899.53825
2015	912633095.980805
2016	638209346.915494
2017	404983553.839631
2018	2914444694.38702
2019	472754027.570545
2020	2204755545.68978
2021	11780413869.5721