Year	current US$
1965	-4080624.2907733307
1966	-21979994.931341898
1967	-18292599.76236351
1968	-26255762.05951241
1969	5770106.893209151
1970	17727713.777720258
1971	-51207085.00400265
1972	-85308669.75151101
1973	-62811431.72389842
1974	56916211.11394483
1975	-81656289.00546817
1976	-136848456.98624083
1977	-93210794.42762397
1978	-208281736.62319252
1979	-424028383.7783805
1980	50283352.310165554
1981	-432822893.34389275
1982	284501001.2636613
1983	75161065.25956567
1984	181713954.67394015
1985	160040347.90644425
1986	66035998.33515977
1987	-513084234.9890194
1988	8729311.220088243
1989	323503987.2740113
1990	353349715.20445013
1991	634513722.5972725
1992	269375911.2697261
1993	1071655488.0650384
1994	534228679.5067021
1995	712153596.3733561
1996	378219989.88451684
1997	521311608.07252365
1998	187969065.43759444
1999	187230060.77755636
2000	188685421.7832522
2001	-114993489.02247116
2002	-311599249.7241538
2003	-218692650.59002957
2004	-139802527.95276025
2005	-98869795.51739036
2006	262166379.6209748
2007	177450169.9762463
2008	-805869364.1492732
2009	-841139051.2106633
2010	-687908925.764109
2011	-938106663.3894054
2012	-688308909.7746178
2013	-808245361.4491073
2014	-1314441456.01628
2015	-1147279401.8023012
2016	-926064461.8456036
2017	-901317345.181009
2018	-1244653783.6660736
2019	-1459111721.0033135
2020	-1332207512.5853693
2021	-1671323232.028598
2022	-1180101886.7039633
2023	-958910201.7384098