Year	current USD
1960	15952380.952381
1961	18571428.5714286
1962	14285714.2857143
1963	15238095.2380952
1964	17478991.596638698
1965	12761904.7619048
1966	13714285.7142857
1967	15428571.428571401
1968	17523809.5238095
1969	16952380.952381
1970	22476190.4761905
1971	24860541.9215669
1972	31650677.1358443
1973	38188218.1045361
1974	46505447.7810258
1975	75323106.2950727
1976	83960118.9435018
1977	121692504.95395699
1978	148496651.616763
1979	160900649.99926198
1980	194096119.559259
1981	228835732.395849
1982	328600426.28329396
1983	383489474.296776
1984	249474468.77256802
1985	215938722.294654
1986	206793454.647122
1987	194409783.482288
1988	232920340.777147
1989	234062029.597997
1990	247855881.53923398
1991	260431030.66012996
1992	289677115.168701
1993	276167134.915416
1994	297068854.727893
1995	342902458.366376
1996	397469509.188336
1997	358166577.75045
1998	365849374.736546
1999	357013395.37863696
2000	332389762.745499
2001	335647906.805402
2002	345424236.66941
2003	407385561.057386
2004	444651416.734245
2005	468464579.97734
2006	497212663.971991
2007	490650558.781295
2008	578911487.330985
2009	564775933.702148
2010	571189045.689535
2011	715239597.096137
2012	681225950.6111189
2013	759358881.2428449
2014	908359962.890424
2015	979306829.765545
2016	987734705.2157999
2017	858949581.256569
2018	844227367.1285139
2019	1000922131.14754
2020	1157372367.01178
2021	1250454380.22537
2022	1156186915.6935399
