Year	current US$
1970	2389519044.1923823
1971	2729278642.1499295
1972	2916491438.870532
1973	3087157477.7154174
1974	5012529630.883847
1975	7731798171.351168
1976	9962072468.675922
1977	12355570606.163223
1978	13589569928.885878
1979	15638672536.403656
1980	20177000000
1981	25341333333.333336
1982	35012666666.66667
1983	39753870967.741936
1984	41304193548.3871
1985	40420967741.935486
1986	44033870967.741936
1987	47994193548.3871
1988	52778709677.41936
1989	70886774193.54839
1990	101409677419.35484
1991	452061479.34678197
1992	346467532.46753246
1993	372183259.00734705
1994	1459739578.3190527
1995	5662656614.092861
1996	4097639591.057184
1997	8150657623.201166
1998	10199782098.356709
1999	10892153673.283749
2000	12274453883.495146
2001	12795337250.33493
2002	14349259925.189835
2003	12779964730.813118
2004	22810452322.82079
2005	28783902137.93407
2006	34425146201.982635
2007	50879974068.74348
2008	63055918512.691666
2009	81855678721.57295
2010	87766724529.91454
2011	101722388888.88889
2012	123017730013.47766
2013	131605907461.40652
2014	137206856346.4837
2015	123988464055.96472
2016	125428293226.07959
2017	126859402364.86487
2018	135096219150.28535
2019	145514670473.77325
2020	135318753212.54893
2021	121748600000