Year	current US$
1970	52625318.4278662
1971	68440225.3407916
1972	86230654.2197047
1973	110758027.93988
1974	124630669.037259
1975	186632916.871735
1976	230181473.237546
1977	333752729.764732
1978	531720510.677858
1979	728738067.631983
1980	870887925.100138
1981	777605807.208719
1982	634513173.461297
1983	568104560.365887
1984	569325079.249474
1985	544005782.306142
1986	701716917.176382
1987	772112319.775371
1988	748190559.150788
1989	629722167.500834
1990	750348833.928211
1991	701927796.364382
1992	692733295.904907
1993	696689629.498121
1994	536806697.514212
1995	588547951.64321
1996	878213610.635496
1997	822990194.90518
1998	852995374.180416
1999	839361443.595974
2000	818958485.422567
2001	716202632.916719
2002	713570403.131806
2003	724675586.375481
2004	877887256.469483
2005	975855479.49391
2006	854714729.581464
2007	902547998.600584
2008	994274950.640759
2009	992595312.943585
2010	972019306.572847
2011	1089558486.63908
2012	972030986.663988
2013	1075048563.61041
2014	1105453707.69907
2015	1232205234.59214
2016	1836175916.72112
2017	1943257590.66805
2018	1737911890.97235
2019	1972357432.91934
2020	1973154990.53582
2021	2145648174.95833