Year	current US$
1970	1034310006.2478331
1971	1165979994.6602433
1972	1299390010.166913
1973	1586009999.5378401
1974	2425130014.598369
1975	3312699963.2716174
1976	3071920022.875072
1977	3626829996.4070306
1978	4885970029.6521225
1979	6313289973.020554
1980	7375920024.6334095
1981	7199699990.749361
1982	7445279974.937444
1983	7187869940.528648
1984	7423400018.6920185
1985	8388529940.128326
1986	10296729948.043825
1987	11895569887.161255
1988	13547470018.386845
1989	14329699903.488167
1990	16954239948.272707
1991	16753149995.803839
1992	18019199958.801285
1993	16612179893.49366
1994	17917209819.793713
1995	17712790097.236633
1996	14926530097.961428
1997	13311690019.607544
1998	13323629955.291754
1999	12253510061.264042
2000	12044180068.016054
2001	13215850026.130676
2002	17654770109.176643
2003	23036909880.63813
2004	24462639966.011063
2005	30776150146.484398
2006	38818849873.5428
2007	33138530260.08608
2008	36211529840.469376
2009	39359079980.85025
2010	40322719829.55934
2011	42720539804.45865
2012	41756770071.98335
2013	43313180104.25572
2014	40629400218.4868
2015	40153349948.40624
2016	38903390036.58298
2017	43796069895.26753
2018	44514760153.29363
2019	46512199720.38273
2020	59734749735.83226
2021	53978609997.74938