Year	current US$
1970	9690000.081434844
1971	9750000.193715094
1972	9250000.076368447
1973	8719999.976456169
1974	11399999.972432848
1975	18539999.937638637
1976	19260000.04447997
1977	27009999.88056719
1978	31699999.913573258
1979	45949999.6174127
1980	56519999.96602535
1981	60449999.555945404
1982	59740000.039339095
1983	69420000.33333902
1984	75970000.56505206
1985	99830000.01311304
1986	111399998.81759283
1987	129249999.58649278
1988	138300000.55581334
1989	178500001.70618287
1990	209380000.65088275
1991	220670000.34451485
1992	291020000.63657767
1993	304169998.1093406
1994	328279999.1965293
1995	309620000.0941756
1996	283379998.9502878
1997	153409999.92564324
1998	143909999.8064339
1999	152449999.44791195
2000	163700000.31590456
2001	179119998.5742569
2002	166319998.77095225
2003	190759999.78184706
2004	198720001.16109845
2005	242980000.0786781
2006	291090001.10626227
2007	434080000.9369847
2008	465099997.52044666
2009	452709999.62091446
2010	490479996.80042267
2011	472380002.67744076
2012	400979423.5527514
2013	461999744.7133065
2014	510159440.21940225
2015	524829232.1562767
2016	528371456.205845
2017	546978330.0757409
2018	534353228.8074495
2019	566816995.739937
2020	541377001.1067389
2021	515604000.09155285
2022	506895002.90155435