Year	current US$
1960	232383807.0464772
1961	249074320.37027186
1962	256777677.2889291
1963	282455487.0178052
1964	300429939.8280241
1965	323539870.5840518
1966	410759835.6960657
1967	413831956.88525516
1968	399239680.6082555
1969	437879649.69628024
1970	466800186.7200747
1971	520772044.2554172
1972	614624866.4425508
1973	601285460.9929078
1974	847330847.3308474
1975	1008701008.7010088
1976	861520861.5208615
1977	967340967.3409674
1978	1072415652.3437334
1979	1207857305.5647793
1980	1368290408.7750223
1981	1405788640.5227292
1982	1252876862.278407
1983	1291935636.6288052
1984	1319188070.2160187
1985	1173217910.1126587
1986	1345404286.6951218
1987	1531804281.1783547
1988	1670348929.7909796
1989	1921094525.9948313
1990	2207161027.4184737
1991	2061617580.2407997
1992	2201691650.370422
1993	2398215527.5557094
1994	3029414343.5519867
1995	3372676722.9191117
1996	3345729493.8695126
1997	3409513268.4810653
1998	3377181942.54446
1999	3469205911.957163
2000	3493068625.147433
2001	3270027447.8897734
2002	3184137158.7895575
2003	3452736098.175445
2004	3819978691.835574
2005	3966075212.8487926
2006	4787762835.579256
2007	5085113542.195719
2008	5750176380.15002
2009	4179085017.291259
2010	4142694563.587707
2011	4386643486.4781275
2012	4469328280.867601
2013	4361406704.163275
2014	4344148359.1621895
2015	4245566239.871573
2016	4478410902.967681
2017	5132359243.703619
2018	6066399098.860548
2019	6021403140.721259