Year	current US$
1970	1360448266.8952065
1971	1841892671.6676283
1972	2327418570.734079
1973	3279532489.216641
1974	3036403750.689465
1975	2536706573.3002033
1976	3359314107.5604053
1977	3629900266.614002
1978	4163879598.6622076
1979	4732044475.608535
1980	4846554719.166184
1981	5679793522.6042795
1982	5498907501.82083
1983	6067954784.437434
1984	5490511251.68516
1985	5872634271.099744
1986	7837980566.117449
1987	10079232435.778397
1988	11010628019.323671
1989	10331419778.658934
1990	9705970238.450966
1991	9064821066.846725
1992	9100382815.823053
1993	11699574138.598528
1994	14167531595.335491
1995	16316418703.506907
1996	17343554877.20272
1997	16071991426.590178
1998	12453813358.597822
1999	13946234885.048523
2000	13159882316.778643
2001	14319437468.608738
2002	17178766819.458818
2003	22852082569.927937
2004	26568067226.890755
2005	27499823980.849117
2006	26070942221.645805
2007	34155214227.970898
2008	29922682223.94039
2009	26771815853.58236
2010	32923970498.937943
2011	37208565326.16266
2012	38440920616.00631
2013	45335114400.64134
2014	47923015236.567894
2015	43032130964.626305
2016	45150623901.428795
2017	50864413904.990974
2018	50635238221.54067
2019	50906695215.3504
2020	47663566553.36315
2021	53988541519.30966
2022	51159556593.50541