Year	current US$
1970	395650000.2574177
1971	464050000.0566243
1972	532800001.6771258
1973	641650003.4425409
1974	868079999.055713
1975	1141720004.145056
1976	1127030001.6533582
1977	1283649998.9517035
1978	1795320009.1700995
1979	2424230018.2506433
1980	3069670004.690066
1981	3191389998.63714
1982	3168849993.1190166
1983	3137999997.479841
1984	3230610001.033172
1985	3811069990.3480716
1986	4622169998.563827
1987	5356970005.812123
1988	6522719998.335466
1989	5898249991.314486
1990	7405140025.537461
1991	6996840030.1635275
1992	7880849986.724556
1993	6899890004.144981
1994	6955779980.2999935
1995	6767550001.099706
1996	5931630012.24771
1997	5914320014.553144
1998	5983209997.6334715
1999	5576849980.48842
2000	5766920006.964355
2001	5844570002.501831
2002	7720279957.083985
2003	13478499958.14078
2004	12050639944.350353
2005	12171520024.726171
2006	13584640031.808989
2007	14811429997.71237
2008	17598090013.412766
2009	17176510031.035166
2010	18240989966.31056
2011	21734880091.620605
2012	18588760017.788044
2013	19736559965.696186
2014	17941920072.596523
2015	16944239912.854511
2016	17098599990.941587
2017	18635920000.933113
2018	18203780033.843594
2019	17340979954.93375