Year	current US$
1970	6090000.037103888
1971	9169999.871402977
1972	16739999.890327452
1973	21209999.946877353
1974	52799999.49410562
1975	73310000.17374754
1976	96349999.84502797
1977	187659999.03343618
1978	287340001.1546911
1979	327009995.87588
1980	414369998.65807587
1981	410180001.03347015
1982	357680006.1482936
1983	293209998.03766596
1984	341539997.84216285
1985	281279998.5408783
1986	440860001.99243426
1987	521639998.5086172
1988	589089997.9360402
1989	516339996.9656021
1990	669869995.3034519
1991	441810000.9076296
1992	633790000.8764117
1993	546099994.3558127
1994	560929999.5135517
1995	765729999.3485215
1996	731789998.4288963
1997	678509996.5129049
1998	705439998.421818
1999	469039996.87172484
2000	614880002.2508949
2001	906779993.8805404
2002	1032609995.3595552
2003	1093000002.9448423
2004	1263740004.703403
2005	1236810004.4596941
2006	1086009988.6357787
2007	1431159983.1916387
2008	1545680004.6190622
2009	1267980000.566691
2010	1447850001.5400345
2011	915740000.7750841
2012	748839991.7390198
2013	774049999.0228564
2014	668069997.6608156
2015	544860006.3137709
2016	562750000.5997716
2017	599510004.4179709
2018	684680006.7629668
2019	631849998.1015921
2020	641050006.1456115
2021	561850007.3794276
2022	546780005.2314997