Year	current US$
1971	0
1972	0
1973	0
1974	0
1975	0
1976	109835.74117052
1977	26362.6814061551
1978	5238.57984329591
1979	6312285.50153613
1980	28621445.2076227
1981	22242848.8308931
1982	16715001.9889035
1983	27455229.5653698
1984	15604148.6014893
1985	787746.736337571
1986	6725583.67147324
1987	9747060.95751704
1988	5735712.32426688
1989	5535991.17790636
1990	13594249.3713368
1991	7266812.9654711
1992	14129974.4227044
1993	6212883.53561588
1994	7034840.84360406
1995	5823891.80418258
1996	20616266.9942366
1997	54056988.9069189
1998	41950449.2434676
1999	36745105.374306
2000	54215004.910999
2001	41172868.6579454
2002	58071716.3625535
2003	64107601.3262666
2004	58921812.5959054
2005	75388109.6507897
2006	71588923.6400232
2007	194536559.005771
2008	243198914.721263
2009	114302367.727546
2010	137481472.816286
2011	193487255.585633
2012	178278326.781481
2013	149622177.619607
2014	143994526.832078
2015	52019786.1713218
2016	34476401.4237581
2017	56799331.800386
2018	88941335.5019508
2019	75613327.5750872
2020	24303470.6480582
2021	57729544.6598048