Year	current US$
1960	-1200000.06072223
1961	-4799999.72134829
1962	34240001.0097772
1963	19909999.7039884
1964	7430000.34987926
1965	-22600000.3870577
1966	-10510001.0633469
1967	13499999.2530793
1968	-7769999.81887639
1969	-13390000.2148002
1970	-10290000.4331023
1971	-2250000.11175871
1972	-5789999.93018806
1973	8870000.22083521
1974	180000.00715255702
1975	5790000.05312264
1976	5129999.99523163
1977	-110000.23968517799
1978	4729999.98554587
1979	7859999.97146428
1980	7079999.9497830905
1981	15090000.0203401
1982	23349999.9102205
1983	36010000.051930495
1984	54579999.4505942
1985	79660000.3093481
1986	127109998.445958
1987	160499998.634681
1988	282010002.955794
1989	428349994.033575
1990	349689999.02159
1991	463459993.077442
1992	370539995.808154
1993	299659995.011985
1994	299470001.900569
1995	79810000.8517504
1996	105760000.187904
1997	33979999.419301696
1998	122640003.625304
1999	7210001.50591135
2000	-7240000.220015651
2001	-4269998.9490211
2002	20970000.2074242
2003	55149999.5775521
2004	82120000.66787
2005	121879998.870194
2006	65219999.9224395
2007	86239999.929443
2008	122759998.355061
2009	65440001.247450694
2010	95419999.152422
2011	67489999.8996407
2012	28910000.195726797
2013	36750000.4488975
2014	46810000.8573383
2015	39010000.143200204
2016	34880000.2783537
2017	107349999.373779
2018	-4499998.25283885
2019	-12320002.205669899
2020	167899998.705834
2021	172790001.38305098
2022	132860000.31605351