Year	current US$
1970	0
1971	1549999.9988824101
1972	4039999.9246001197
1973	5980000.02279878
1974	10270000.0721961
1975	16670000.497251699
1976	23159999.8474121
1977	19859999.882057298
1978	20550000.0789762
1979	27609999.5542318
1980	36189999.7647852
1981	38720000.3638864
1982	45790000.025183
1983	55290000.3902614
1984	63829999.7411668
1985	70140001.7868727
1986	103020000.99420501
1987	145109999.522567
1988	209540001.301095
1989	223360000.30487803
1990	241490000.85704
1991	271219999.872148
1992	184580000.359565
1993	81649999.8103827
1994	84470000.6451458
1995	80450000.7089227
1996	80009998.8132715
1997	68860000.2843887
1998	69969999.3897229
1999	70269999.4277209
2000	66200000.2693385
2001	71869999.9898672
2002	85960000.211373
2003	112030000.530183
2004	137810000.49039698
2005	150899999.262765
2006	186329999.798909
2007	223059999.318793
2008	259840002.99871
2009	308970003.355294
2010	308959997.22182804
2011	315420000.093058
2012	314830000.305548
2013	320549999.365583
2014	390139999.66159505
2015	254190001.010895
2016	183680000.057444
2017	159690000.40926
2018	127820001.088083
2019	170949997.28351802
2020	240330003.527924
2021	200059999.25173798
2022	130189998.71425334