Year	current US$
1975	-616180.1282890431
1976	-3011365.025051937
1977	-1062985.140829452
1978	-3979626.8742131167
1979	-5609322.6022803495
1980	-4048052.835345024
1981	-7661457.136290508
1982	-3608885.282483018
1983	-12882882.882882882
1984	-7957876.26151821
1985	-9439905.02130037
1986	-13661096.256684491
1987	-9395742.893152231
1988	-22232760.83055627
1989	-18352006.356773928
1990	-14459021.453928074
1991	-27653092.703995064
1992	-10443174.226115359
1993	-13242052.023121389
1994	-15468944.099378882
1995	-19113226.847116243
1996	-20623914.27875639
1997	-25580846.853977047
1998	-30705227.882037535
1999	-15746673.34703525
2000	-18275721.748828176
2001	-17153561.956205737
2002	-25615780.948007446
2003	-26381960.588548232
2004	-33429486.098421913
2005	-45851139.297976784
2006	-45199735.179774106
2007	-62668313.13858626
2008	-78113392.77634794
2009	-83081203.51076715
2010	-61890695.46450617
2011	-40299237.41455642
2012	-38916428.505686365
2013	-74870874.09943517
2014	-81834790.50159879
2015	-93996131.9819629
2016	-69688057.34243345
2017	-71540490.6440693
2018	-80828376.90492775
2019	-67146349.47212003
2020	-74459763.81589569
2021	-186488521.30127764