Year	current US$
1970	34644504.2712108
1971	37716858.7896253
1972	57108664.4951142
1973	58142176.4184396
1974	94846661.5333848
1975	126811576.724233
1976	133069307.614124
1977	167278516.340336
1978	144924566.785011
1979	130795758.121954
1980	171089937.368349
1981	185912733.035365
1982	218931272.188365
1983	246235092.322336
1984	145398833.032464
1985	103651916.78822
1986	121220534.806674
1987	135411587.034101
1988	143217654.896148
1989	182469043.136163
1990	178975543.103007
1991	154030803.258528
1992	106971461.792747
1993	167813285.362706
1994	219324253.367749
1995	217238827.759297
1996	286767352.234399
1997	381082305.961107
1998	524511606.64364
1999	503917185.816377
2000	484283517.110695
2001	464116670.473494
2002	473913305.050614
2003	378272076.165941
2004	382725661.04642
2005	501963501.714819
2006	524994642.656731
2007	549851333.613616
2008	800295455.825483
2009	690588549.816085
2010	792826021.67896
2011	895458230.080392
2012	921732394.326525
2013	873448791.904013
2014	835084776.512264
2015	755960058.236208
2016	728155614.659928
2017	757270966.261902
2018	834975907.279131
2019	804041989.669175
2020	697910526.146026
2021	743932861.618276