Year	current US$
1970	3770000.014454129
1971	6120000.064373019
1972	8590000.0333786
1973	15800000.101327896
1974	19140000.37871297
1975	30190000.122413002
1976	38509999.81909987
1977	63590000.31650061
1978	71179999.88794328
1979	84080000.23663044
1980	88210001.58414236
1981	87759999.23050413
1982	119979998.60346319
1983	127089997.96211717
1984	110309998.56069683
1985	134859997.8927523
1986	195839998.19494784
1987	201550000.2615153
1988	249380005.75266778
1989	231599996.963516
1990	327789998.08803236
1991	333889995.41103846
1992	367809996.1392582
1993	271570003.39031225
1994	316649998.9684671
1995	327520001.012832
1996	335490000.6763635
1997	322509999.79674804
1998	308970001.48519874
1999	281560001.45897275
2000	270089999.0256876
2001	287979999.07657516
2002	396729997.3536283
2003	522249999.93294483
2004	547260000.9087473
2005	636790003.8715453
2006	716580002.0769236
2007	863689990.8222258
2008	969179997.0697619
2009	815739998.6460804
2010	940639991.8086824
2011	958579987.5557415
2012	784370004.4304135
2013	876700001.6793607
2014	860110003.7731233
2015	563559998.1434642
2016	512229999.9035898
2017	550619999.6098876
2018	587619998.9393353
2019	614400004.8637391
2020	587099999.1819264
2021	595539998.6207484
2022	605650001.4141202