Year	current US$
1970	43269825.6000733
1971	45777518.3995235
1972	53188597.4739216
1973	67710904.9018805
1974	60043561.6006321
1975	49299947.9495701
1976	24573315.3699955
1977	28767020.5803295
1978	34058604.3544142
1979	40802694.6648603
1980	68260648.8297505
1981	71656207.7189106
1982	57229226.7122094
1983	28969400.8757225
1984	9747863.17300211
1985	531155.551428249
1986	607343.525853314
1987	448790.002997688
1988	8264318.63550919
1989	24795671.9765311
1990	49609312.9814416
1991	73343479.6038566
1992	113283038.245586
1993	159856724.268625
1994	181660439.96543
1995	237721865.905823
1996	346557136.871906
1997	320262059.180262
1998	331783515.760649
1999	322661916.979477
2000	352814824.115243
2001	411826362.005283
2002	474684493.678948
2003	493264711.680291
2004	376585688.521312
2005	440012354.075238
2006	477531502.75516
2007	674113595.280121
2008	891362781.761693
2009	1050987254.245
2010	1153868357.0885
2011	1304496316.87786
2012	1324135357.16294
2013	1244924894.73558
2014	1112312940.20784
2015	895756741.77785
2016	885915398.581179
2017	881599458.625643
2018	908738117.155385
2019	934554902.684811
2020	827743015.247292
2021	876816741.295883