Year	current US$
1960	15669999.975711107
1961	33550000.116229057
1962	15260000.094771383
1963	34879999.943077564
1964	44220000.11242926
1965	51170001.635327905
1966	46959999.1645664
1967	37079999.04640016
1968	24500000.22538002
1969	22520000.150427226
1970	21509999.837726362
1971	38220000.56318941
1972	42290000.27105214
1973	45709999.92452561
1974	18189999.949187044
1975	33009999.87125397
1976	36459999.85001982
1977	27979999.877512448
1978	33590000.36865472
1979	46990000.01139944
1980	11430000.029504295
1981	-7860000.077635048
1982	449999.96200203337
1983	5360000.245273115
1984	-960000.036284331
1985	6900000.004097813
1986	-1659999.947994948
1987	39310000.13276934
1988	67100000.46901405
1989	90100000.23059551
1990	102739999.11174174
1991	107509999.8153746
1992	140359999.99195337
1993	131219999.04699624
1994	158450000.41089946
1995	130609999.05318023
1996	122650002.23740932
1997	178159999.37430018
1998	131989998.9478289
1999	118770001.10037626
2000	105239999.11174169
2001	368649994.67134476
2002	1134419991.016389
2003	1428820004.567504
2004	1934599977.9105191
2005	2441790047.4555845
2006	2644089955.01697
2007	3347500025.9280252
2008	4365230066.865684
2009	5533499925.926334
2010	5845170058.920985
2011	6316669943.332676
2012	5880900100.0523615
2013	4522099991.45567
2014	4384499996.136876
2015	3778189984.5507045
2016	3551740001.229575
2017	3246749972.5744104
2018	3123159989.487381
2019	3435269961.729645
2020	2719439966.3228617
2021	3733709989.778703
2022	3342789988.670499