Year	current US$
1970	18437995325.3643
1971	21046936760.3279
1972	26362819653.5578
1973	34603860423.1444
1974	39067245554.2806
1975	51437018071.8162
1976	53735424423.8165
1977	60227930063.7105
1978	71252906960.3154
1979	86813135990.5983
1980	103944427198.202
1981	93572721768.1068
1982	89863259784.4643
1983	85812032044.3865
1984	81124371398.8456
1985	84016644787.276
1986	115759068126.581
1987	141321619511.241
1988	152487611501.324
1989	153297347272.714
1990	192126249883.923
1991	199681432427.02
1992	220162329617.025
1993	210054435937.281
1994	218787807167.67
1995	247535812837.871
1996	247756122508.592
1997	222569116630.194
1998	226693351146.498
1999	226207853667.638
2000	208838033407
2001	213598685992.021
2002	235632244504.747
2003	292483011397.604
2004	337596332599.224
2005	355592102064.603
2006	382184192379.788
2007	441111655043.763
2008	502977779810.21
2009	482413396214.432
2010	469426991725.719
2011	511045235494.848
2012	483749915467.443
2013	506716875538.667
2014	514872435493.515
2015	434846949058.31
2016	443161944184.635
2017	467712860006.851
2018	507562438901.195
2019	503113114841.879
2020	522277166149.18
2021	571560437697.342