Year	current US$
1971	17899999.62
1972	22579916
1973	22540000.92
1974	61891856.672
1975	137969344.139
1976	163734905.244
1977	353992817.4897957
1978	947889502.4110761
1979	1377328812.9620168
1980	1567005342.279097
1981	1323664944.3242092
1982	974902624.0465928
1983	1087775688.6457388
1984	939289410.0194006
1985	1001794756.3955097
1986	928118888.8864757
1987	979539497.866375
1988	1112092869.9597332
1989	1371374332.2960918
1990	2348301670.851955
1991	1797672095.7998037
1992	2161549354.3528423
1993	2696502197.733329
1994	2668818007.396222
1995	3010064965.433014
1996	2946993401.536658
1997	3490065446.560431
1998	4397899791.987265
1999	5377393934.7967205
2000	5790277498.945073
2001	6048749546.99996
2002	9296357133.309778
2003	12642527484.59223
2004	16169235136.131245
2005	28599690757.806915
2006	32016499570.067646
2007	36754170244.611115
2008	42561000437.15904
2009	42281322646.33996
2010	45264112742.24827
2011	47509158733.13274
2012	50452863382.88255
2013	54976943393.37755
2014	54150785033.683815
2015	56181056074.47697
2016	56618915329.545944
2017	61933930372.09795
2018	70728435247.23505
2019	71850951565.39543
2020	63367540874.40947
2021	71051783080.62137
2022	71797229194.00015