Year	current US$
1975	-103892335.15563986
1976	-74189538.5236797
1977	-146595405.10318187
1978	-198515316.92102036
1979	-245956766.46706587
1980	-383656053.0679934
1981	-272852022.31520224
1982	-287575955.6103576
1983	-293066073.4149054
1984	-283460817.547358
1985	-245304030.71017274
1986	-104639774.01129943
1987	-110507551.76613887
1988	-232172647.42785445
1989	-383980236.6863905
1990	-313499103.71318823
1991	-577516161.6161616
1992	-772991786.1799217
1993	-28577267.37338045
1994	-29493690.476190478
1995	-85815006.4683053
1996	-43416562.10790464
1997	-132882554.16191562
1998	254701357.46606335
1999	277522114.34735703
2000	242730442.97832236
2001	475042805.1001821
2002	133534615.38461538
2003	221064552.66138166
2004	-21478750
2005	-98222857.85349962
2006	-589110525.6554999
2007	-1140231316.7259786
2008	-3553683902.1532154
2009	-1392690248.2735307
2010	-2124018168.9835067
2011	-1025214018.4547907
2012	-447725725.9620147
2013	399403609.8163572
2014	245974577.22790402
2015	549132324.4498742
2016	409565220.7627387
2017	-78108415.90082772
2018	360120268.22305065
2019	267515226.22552866
2020	-344659960.2629745
2021	1167102117.684473
2022	93006308.76426564
2023	-295889159.89259124