Year	current US$
1970	15499999.81373549
1971	23200000.21159645
1972	4290000.168606655
1973	18210000.200197134
1974	1149999.9016523375
1975	9890000.23342669
1976	7670000.018551948
1977	10170000.284910202
1978	10890000.101178873
1979	12110000.262036923
1980	29610000.634565983
1981	65669999.73915509
1982	139640000.10862938
1983	201349999.21172857
1984	293929999.59923387
1985	342279999.4535745
1986	720299992.8295615
1987	960620004.3559077
1988	1075410001.0786204
1989	830009992.3275411
1990	861150006.748735
1991	468770003.0207635
1992	613350005.7756901
1993	479599994.4955112
1994	297920001.046732
1995	199909999.8250605
1996	253360001.45971763
1997	234059999.43427753
1998	373199993.0087479
1999	221240003.4889579
2000	231099996.3954092
2001	172600000.9924175
2002	755899992.5628303
2003	671930008.4039568
2004	342619999.82781696
2005	1731440018.0317461
2006	1472329972.2298975
2007	676069996.4314697
2008	1198089981.6155438
2009	403860007.6586009
2010	370740000.56087977
2011	784170015.4263531
2012	158350000.87134543
2013	177310000.15139574
2014	173120000.07927418
2015	308519998.2114133
2016	295130000.2112979
2017	440509991.9904019
2018	327089999.5267393
2019	276539998.43448406
2020	236580001.73792237
2021	892220026.9997125
2022	402059993.42910963