Year	current US$
1970	1788902974.0996
1971	2291981964.45983
1972	2261891708.86326
1973	2827134454.66999
1974	8516388111.88148
1975	10665061950.313
1976	11801028762.2087
1977	13180528580.2755
1978	14842694943.1546
1980	28153061989.6071
1981	29956540102.0323
1982	25791248412.7018
1983	23546193173.979
1984	24326689064.6379
1985	23981669379.6716
1986	23830758310.4898
1987	25847502785.0518
1988	25726808753.3307
1989	30140708568.4774
1990	24210150770.0875
1991	14729529657.1197
1992	22951839943.8974
1993	24248191824.0594
1994	24120220936.583
1995	27927712152.1015
1996	32073549579.2931
1997	32200511628.2305
1998	28101077438.1309
1999	31456933796.7541
2000	38002222186.6236
2001	33663240276.1982
2002	34734559535.6082
2003	42698262959.5018
2004	55427404222.9965
2005	74420276064.0485
2006	97083592478.893
2007	107413529572.972
2008	130640283856.103
2009	95101335428.8399
2010	103929179353.96
2011	131699662930.618
2012	146200888410.736
2013	150837272222.942
2014	145513858761.338
2015	106646071205.125
2016	102937829112.784
2017	117909728199.796
2018	129708396823.958
2019	129183021129.703