Year	current US$
1970	143606664241.7506
1971	161831447596.1014
1972	180912480016.05618
1973	238798069655.37317
1974	306069843724.1567
1975	319256884295.043
1976	353259188783.3233
1977	389631470307.7067
1978	437532991718.6971
1979	507598740443.4791
1980	606731341100.8451
1981	705808309900.2767
1982	644900733424.1797
1983	547808504834.1834
1984	548102066706.0414
1985	541490317377.6457
1986	553468346769.9475
1987	579995981071.929
1988	659299570245.7117
1989	723824732377.811
1990	843044289351.1613
1991	939618944171.0995
1992	1038380996628.187
1993	1219651480061.1257
1994	1427554629605.1758
1995	1548656829848.1118
1996	1693062207933.6401
1997	1856012892967.126
1998	1860918389157.007
1999	1638063181967.5278
2000	1798543596681.7732
2001	1756725487903.5056
2002	1549672507168.2483
2003	1560996798088.0215
2004	1788661198911.5498
2005	2158536430336.799
2006	2552399445086.98
2007	3054940983166.139
2008	3552615506232.872
2009	3329986775874.836
2010	4105217381098.823
2011	4589951039523.117
2012	4603095354000.119
2013	4759966096641.176
2014	4857481943879.5205
2015	4117865424893.5386
2016	3990167093704.405
2017	4464256280910.617
2018	4301937802654.117
2019	4250592999571.6943
2020	3581901571367.303
2021	4008134602047.066