Year	current US$
1970	74865388.6302408
1971	172866746.29251
1972	305262515.78424
1973	601716571.093888
1974	2910816819.20222
1975	2492129418.93855
1976	3522406140.98216
1977	3787131057.95476
1978	3552492673.80615
1979	8214983425.62914
1980	7940277837.51001
1981	6823727925.21562
1982	3735189075.0848
1983	3473007939.49923
1984	3934781966.60142
1985	3305542861.68687
1986	1000086769.82664
1987	1320918662.01162
1988	1204454616.77473
1989	2188833862.07628
1990	3756360679.16444
1991	2875293757.30724
1992	3003779945.47361
1993	2648842269.02097
1994	2230233436.14257
1995	2398216185.80251
1996	3267676234.68185
1997	3291168427.24259
1998	2061441563.59958
1999	2495695122.23989
2000	5267670079.28068
2001	3787914970.44298
2002	3639077678.91519
2003	5659786098.41884
2004	8193118318.95434
2005	10897571077.2878
2006	15843329838.4449
2007	16541545031.449
2008	22773683713.3929
2009	12131425577.0232
2010	17469770299.447
2011	27767338129.6577
2012	29714838615.4263
2013	31204966058.9668
2014	28221033863.3258
2015	15400830411.6831
2016	13472898640.1538
2017	16914105590.4782
2018	23450378115.7807
2019	21668025522.078
2020	11913047286.9651
2021	20763096619.2375