Year	current US$
1970	3456574.09582632
1971	5996171.61498869
1972	5790894.88434856
1973	10508524.6513239
1974	60182600.691046
1975	60196815.7382719
1976	65141900.8719123
1977	40581497.9023048
1978	58083340.4886416
1979	157197172.103462
1980	206854149.124991
1981	143681858.764753
1982	91188644.7871582
1983	105306613.808358
1984	119931171.156366
1985	98178500.6850262
1986	45624867.1724149
1987	73006547.7154125
1988	58834720.4422011
1989	83870485.8299063
1990	107368245.278326
1991	73067052.8727605
1992	77434031.5998427
1993	81712798.6156126
1994	80078804.9018177
1995	104563198.602421
1996	139185265.432942
1997	121044978.873136
1998	102983566.413712
1999	140397944.681472
2000	261425876.893847
2001	158756648.796823
2002	175616607.90612
2003	204155051.342733
2004	341344579.825451
2005	589426556.433873
2006	701413199.591193
2007	616514669.349242
2008	749927164.321505
2009	400397248.015892
2010	497702471.045387
2011	978707523.690897
2012	1796164909.05876
2013	2162595925.70027
2014	2070331968.21185
2015	906516938.813618
2016	455301851.124408
2017	617048932.392679
2018	1135239614.91446
2019	926278703.893107
2020	439930983.043292
2021	902657904.743525