Year	current US$
1970	97110000.69230796
1971	92869999.05481932
1972	111050001.14999709
1973	145560000.82753593
1974	164670001.14172703
1975	200360001.5118719
1976	261709996.66303375
1977	302329994.3320453
1978	298420000.28863555
1979	390840001.5085935
1980	473710002.9420107
1981	456460008.4386764
1982	382400004.4129789
1983	247359999.53933057
1984	277529999.2244691
1985	222929999.59737056
1986	353730003.5823136
1987	444459999.30053973
1988	528480007.48455465
1989	574419996.8222531
1990	699020001.5660381
1991	502840003.7232785
1992	485480004.3944271
1993	397249996.18344
1994	402200000.3419816
1995	663650001.9095837
1996	607680005.7683139
1997	579929997.427389
1998	666850004.7400595
1999	491300000.93765587
2000	529300002.2843479
2001	837650003.384799
2002	738089996.585622
2003	646379995.4690037
2004	373239994.1254405
2005	880250003.4868718
2006	514720000.83513534
2007	441849998.82802343
2008	551479995.9268422
2009	520279999.4349473
2010	339460003.5883486
2011	274510000.6908177
2012	119779998.2093275
2013	80070000.82917514
2014	38429999.349638775
2015	128909999.13401896
2016	240190003.44537172
2017	116900000.70258981
2018	203900002.18153
2019	82659999.67232351
2020	98530000.53577122
2021	96100000.65900388
2022	274709992.21131176