Year	current US$
1970	161299999.2370605
1971	166499998.92711633
1972	229899999.7377396
1973	258129998.99685374
1974	368490000.6651877
1975	418280001.8452107
1976	424529999.52435476
1977	381759999.6924401
1978	450870000.9286403
1979	549890002.7759372
1980	795089998.6214936
1981	823769998.7795208
1982	750349997.3937871
1983	716759999.7501816
1984	806189986.146986
1985	807730001.5110524
1986	1044640001.4758108
1987	1314720007.3003776
1988	1425059981.7316988
1989	1663689989.9635458
1990	2286100004.9114223
1991	2089760005.8689713
1992	2152309987.1035666
1993	2124370002.5938444
1994	2114449993.8599765
1995	1954169958.269224
1996	1556089982.6902902
1997	1416010005.2654736
1998	1128100004.309788
1999	1120120003.486052
2000	1010130002.4893134
2001	770420005.6623669
2002	1649649983.1862755
2003	2407029996.6372538
2004	2492539987.1189146
2005	1120710012.136027
2006	1526209996.785968
2007	1543240004.9120176
2008	1438509997.632355
2009	2394040070.2636695
2010	1704329991.7485573
2011	2780420066.8931007
2012	2642310010.3717303
2013	1882690018.7283754
2014	1453879980.0164995
2015	1179600000.9719284
2016	984550002.9772521
2017	1197600001.9479544
2018	1691050016.3882976
2019	1924509993.5848262
2020	2461180013.626813
2021	2430590004.554017
2022	2611910024.652257