Year	current US$
1969	7690000.05722046
1970	7909999.84741211
1971	8970000.26702881
1972	22370000.8392334
1973	26819999.6948242
1974	37040000.9155273
1975	68629997.253418
1976	92870002.746582
1977	103759994.506836
1978	123260002.13623
1979	250309997.55859402
1980	464449981.689453
1981	436779998.779297
1982	365950012.207031
1983	355549987.792969
1984	396600006.10351604
1985	418040008.544922
1986	386779998.779297
1987	397580017.089844
1988	476580017.089844
1989	489470001.220703
1990	468109985.35156304
1991	790260009.765625
1992	1043920043.94531
1993	1266020019.53125
1994	1058900024.41406
1995	898590026.855469
1996	297950012.207031
1997	282510009.765625
1998	252220001.220703
1999	268609985.35156304
2000	513729980.46875
2001	567770019.53125
2002	653380004.882813
2003	552659973.144531
2004	366019989.013672
2005	224350006.10351598
2006	184070007.32421902
2007	257309997.558594
2008	277700012.207031
2009	299380004.88281304
2010	391339996.33789104
2011	438390014.64843804
2012	420873596.191406
2013	417428100.58593804
2014	480081878.66210896
2015	457315216.064453
2016	499819000.24414104
2017	518199584.960938
2018	477078735.35156304
2019	667981262.207031
2020	622845947.265625
2021	594396362.304688
2022	294097200.1552581
