Year	current US$
1970	3250000.0316649703
1971	4410000.061616298
1972	4499999.96274709
1973	16189999.729394902
1974	26659999.836236235
1975	26680000.52124261
1976	23599999.97727576
1977	20740000.16227364
1978	88580000.13604757
1979	169550002.0403414
1980	174080000.7153303
1981	176209998.127073
1982	205920000.37245455
1983	198250002.20909712
1984	180170001.04486948
1985	190519999.7983873
1986	297610004.0376184
1987	412499998.4130263
1988	620019999.0645049
1989	589159996.7367951
1990	423919998.91400355
1991	599410006.7764525
1992	548939995.0504302
1993	597510000.2065297
1994	714869992.8112323
1995	774219987.7016246
1996	597059998.3427669
1997	476469994.84300625
1998	520910002.5612861
1999	563789996.2738158
2000	588229997.679591
2001	596970001.2505053
2002	374919998.9438059
2003	325049999.0284444
2004	359460002.154112
2005	838550011.662766
2006	587810001.3229996
2007	1292749980.697408
2008	603339995.6505742
2009	785459993.7498573
2010	933579995.3341486
2011	1034510009.1397766
2012	1082090013.6232371
2013	1368259983.4799776
2014	757260001.9872193
2015	954800008.6843969
2016	786589989.9005885
2017	710690006.8521503
2018	821070012.5098226
2019	885139995.4557414