Year	current US$
1960	165701553.71937853
1961	194116082.35356706
1962	192225523.10979077
1963	207856236.85750526
1964	190433943.82642248
1965	222879910.84803557
1966	324659870.13605195
1967	327392582.5074875
1968	321239743.0082056
1969	338999728.800217
1970	384240033.6960135
1971	384485147.7301928
1972	357152294.58212805
1973	417774822.69503546
1974	334730334.73033476
1975	441100441.1004411
1976	277860057.8600579
1977	442310442.3104423
1978	483068272.0352547
1979	446061770.9422942
1980	426850546.1934861
1981	347924745.42780477
1982	338213391.5640332
1983	540260177.8164668
1984	405675681.5707806
1985	303927799.26016784
1986	548202729.0718793
1987	689710984.8292233
1988	745272124.4976368
1989	785234658.6610619
1990	1013545790.8345252
1991	926082499.2004291
1992	858365348.0137454
1993	1664024562.5497272
1994	1305569953.2487116
1995	1325987276.1791785
1996	1355269370.3949816
1997	1502635246.563661
1998	1317346101.2311902
1999	1342373946.4864295
2000	1038322046.6341132
2001	1120004348.1805582
2002	1070535816.4878832
2003	1067857060.8404715
2004	1245089644.6242638
2005	787193917.0897443
2006	947236774.57444
2007	612352595.6596067
2008	-732116270.5535911
2009	379399668.60126704
2010	258692626.1626288
2011	-238085638.7173492
2012	-257566771.8109388
2013	-120948765.42366935
2014	33632453.63929425
2015	720476616.7319508
2016	1190894520.0242229
2017	1232521115.107027
2018	1645646918.3242583
2019	1619590213.243707