Year	current US$
1970	186749995.0621281
1971	214199998.41600615
1972	289619994.3535032
1973	408290001.4091291
1974	470049995.331094
1975	420929999.83206373
1976	427199996.51424587
1977	298670008.5569177
1978	588619994.5397674
1979	805669994.8459866
1980	871890007.512644
1981	961999990.8506874
1982	1172030008.5935755
1983	1204350012.0621169
1984	1310940023.0310867
1985	1360990012.1167321
1986	1689890038.7547898
1987	2462490024.0842266
1988	2940409940.360114
1989	3129250007.638708
1990	3204960073.4002895
1991	2965810017.194604
1992	4594649995.971474
1993	3955330076.13197
1994	3878939983.2710605
1995	4213170009.970663
1996	3008750004.589557
1997	2221629974.752665
1998	3825239967.063068
1999	5371039951.8609085
2000	4165649983.58488
2001	2983190009.4300523
2002	2751929981.9171424
2003	2372220047.2056866
2004	1974420020.1928618
2005	3210659979.581829
2006	1390089971.7509751
2007	1178979969.501495
2008	-1310017.1089166533
2009	1215730013.6089299
2010	961280001.9979477
2011	-207370017.4093201
2012	-123110053.42006777
2013	1989570073.7237997
2014	148620028.6149964
2015	39410030.96103405
2016	-111589928.03096627
2017	116560022.7713616
2018	-1187080012.5002859
2019	-364100031.37588584
2020	1650750017.404557
2021	843979979.8727021
2022	1256380040.2879736