Year	current US$
1970	2404.78923507442
1971	1851.49920038396
1972	2522.81576216743
1973	6873.00404899166
1974	5915.71810010491
1975	5846.70039746588
1976	8054.97248917749
1977	11806.9517345857
1978	9817.34372465592
1979	14618.8155632985
1980	20004.6759555899
1981	12657.1056140351
1982	10894.7841475573
1983	11396.7293120638
1984	8696.84705882353
1985	9068.8
1986	14664
1987	15038.4
1988	14937
1989	15311.4
1990	15849.6
1991	18049.3733333333
1992	24923.134690149
1993	20505.8610725965
1994	26447.7133004594
1995	44459.6163644005
1996	46973.7111868029
1997	41058.8420635483
1998	34315.9605797102
1999	18807.0035738947
2000	19896.6664621285
2001	23724.782748335
2002	27249.3271439224
2003	40617.5611265521
2004	46245.7244211079
2005	31308.8002319779
2006	37261.4053574328
2007	57450.0068454589
2008	100116.992057143
2009	96864.3899071249
2010	97322.8556257387
2011	132995.118058625
2012	111726.099246669
2013	102795.287057827
2014	158128.587160369
2015	124786.476535117
2016	147460.495055845
2017	174928.211228718
2018	82586.8167486854
2019	76051.7780279161
2020	103108.7299204
2021	90058.8904882861