Year	current US$
1970	-10290000.433102217
1971	-2260000.111535197
1972	-5859999.930486079
1973	8590000.217780469
1974	80000.00566244259
1975	4360000.057145952
1976	3839999.988675117
1977	-880000.250414012
1978	4239999.987185005
1979	6769999.975338579
1980	6199999.954551461
1981	13400000.026449554
1982	22159999.91260468
1983	31499999.972060323
1984	52999999.497085765
1985	72210000.36597249
1986	116359998.79240978
1987	135129998.36541718
1988	265590003.3302606
1989	411169994.2052366
1990	334469998.3969332
1991	426009992.5678222
1992	337729996.46142125
1993	275739995.8893657
1994	259630001.03272542
1995	73130001.0234117
1996	102660000.28327094
1997	31039999.36208125
1998	119930003.72685492
1999	-1389998.39872122
2000	-13820000.024512418
2001	-20199999.01577838
2002	13020000.159740457
2003	38739999.49172143
2004	67580001.18285418
2005	115049998.86825678
2006	62269999.93436045
2007	71459999.97854231
2008	103089998.17259617
2009	56140001.20572741
2010	91939999.19295311
2011	60289999.881759346
2012	24670000.156387698
2013	30100000.23432076
2014	39610000.92886389
2015	33720000.12174247
2016	27870000.23573636
2017	2470000.0640004454
2018	-19119998.49602581
2019	-31210002.07215543
2020	39740000.05051493
2021	35699999.78132547
2022	129490000.43049443