Year	current US$
1970	4800000.116229052
1971	3050000.0044703484
1972	4329999.925568703
1973	7739999.974146493
1974	9440000.068396335
1975	10259999.949485058
1976	11280000.10363757
1977	17030000.070109967
1978	29220000.134781014
1979	28390000.004321318
1980	39609999.8168647
1981	35920000.07256868
1982	45509999.684989445
1983	59440000.72963539
1984	63640000.0117719
1985	63370000.0718236
1986	115199998.95058575
1987	119209998.50705269
1988	126190000.31426549
1989	125399998.26624992
1990	176519998.3287605
1991	173900001.51842827
1992	190359999.14817503
1993	133439999.31961298
1994	143790002.18212608
1995	168380000.94145533
1996	149010000.642389
1997	134300000.10132787
1998	123049999.2296099
1999	128859999.48903915
2000	124480000.68031251
2001	127010001.55322254
2002	150909999.30538234
2003	208809999.64848152
2004	202919997.6865204
2005	420820002.27272516
2006	249540002.45220965
2007	263510002.49013293
2008	309150003.1128526
2009	398850002.0205972
2010	272620001.01432216
2011	392089996.7215954
2012	363120000.96403074
2013	363499997.43141246
2014	404769998.8838288
2015	433540003.7504732
2016	393560006.570071
2017	397079999.0259111
2018	416300003.6217272
2019	420859998.29880875
2020	459950002.65352416
2021	511200006.633997
2022	483960001.20416296