Year	current US$
1970	1173859998.6638875
1971	1186679998.1985245
1972	1301619999.3118644
1973	1237509999.534115
1974	1525079997.8468566
1975	1390000003.846363
1976	1091890002.2916496
1977	1247129995.15608
1978	1753339995.2612817
1979	1787819997.2137814
1980	1982389978.8465343
1981	2285359992.5991135
1982	2636850018.940867
1983	2885120006.0192494
1984	3010040006.4773865
1985	3131180023.0965033
1986	3557470012.1600175
1987	4428650000.622497
1988	4709440025.450662
1989	5145650015.698745
1990	7769960039.602595
1991	9483629988.82495
1992	10638209945.149727
1993	10419450027.750807
1994	11330509985.424582
1995	13692360134.309158
1996	9436329974.360765
1997	7816250027.311968
1998	9771149970.93007
1999	12800539938.02146
2000	11758390029.858795
2001	10768769981.246443
2002	11518039992.12198
2003	11108069933.492685
2004	13674869976.95454
2005	8627589975.787327
2006	9553820006.052034
2007	9266929998.006672
2008	10835650041.794407
2009	10887860034.19012
2010	9192709973.145275
2011	11954780001.973745
2012	12049390054.715801
2013	10652490012.222898
2014	11177460036.890575
2015	9542430046.904829
2016	9824450002.154333
2017	9092840005.550535
2018	8201529997.909439
2019	6908300017.178058
2020	11476799977.736547
2021	11372490006.156265
2022	10764479978.25965