Year	current US$
1970	8589999.858289957
1971	12360000.221058719
1972	6650000.054389227
1973	16929999.74265694
1974	29800000.254064806
1975	82470000.36016113
1976	39629999.995231666
1977	125319997.35161653
1978	158260000.46171245
1979	203240002.39558515
1980	221240001.51082876
1981	199019998.25239176
1982	256820000.05990273
1983	261050003.09646118
1984	189710001.58041725
1985	248220000.04723665
1986	403400002.27093685
1987	596870000.09045
1988	781979999.5794891
1989	881769993.6404831
1990	669249993.5403469
1991	751110006.1126057
1992	708089993.5662745
1993	761700000.0849364
1994	893089993.3744217
1995	990579994.9616194
1996	784129997.0746038
1997	557819991.990924
1998	628780006.1050802
1999	700939993.3740497
2000	724580000.5439665
2001	691340001.7563252
2002	487410002.19061995
2003	528369997.980073
2004	1295360010.1135674
2005	4574950120.549649
2006	3256819983.517749
2007	2423809984.7920227
2008	2774279975.2634015
2009	1372599985.577166
2010	2211229970.932007
2011	2413149998.7244606
2012	2580510021.038354
2013	3100830042.3994665
2014	1765360029.9060342
2015	1927170030.076057
2016	1876279946.2936816
2017	1592840013.3252149
2018	1607860020.1755757
2019	1392529989.1084423
2020	1710950005.6058178
2021	1527129997.8420146
2022	1798060023.3078003