Year	current US$
1970	23908420767.117905
1971	17332607859.716114
1972	20802638386.080345
1973	25472814255.713043
1974	32523348180.506577
1975	40211359636.458206
1976	49584812135.193405
1977	50726806559.46847
1978	57109550683.58939
1979	60331058543.32442
1980	81540174915.24644
1981	180294174287.74136
1982	163108654382.48132
1983	118060257688.42772
1984	95907985327.76738
1985	96308345320.81601
1986	91535625521.5759
1987	91234803953.20853
1988	92438601215.52711
1989	79242562862.41974
1990	92148084214.61002
1991	93349508667.09062
1992	92814562116.67393
1993	75368435338.78223
1994	66309736701.52644
1995	83651733022.74802
1996	92804579124.7586
1997	94714513361.0946
1998	100884776939.077
1999	108553049187.64964
2000	98536497966.96239
2001	110089126986.05643
2002	135751918845.72295
2003	154966015432.31976
2004	189121956882.50912
2005	226093849134.567
2006	309997767677.54565
2007	359234703589.00543
2008	432700418304.5137
2009	403505482313.1619
2010	455521901550.45337
2011	504090893334.8079
2012	559242409730.136
2013	650490354968.2137
2014	731443350204.5265
2015	649626064751.4116
2016	586751222322.7261
2017	567397297698.1204
2018	625239989059.578
2019	654349679725.8778
2020	652269405086.3734
2021	677102880207.1842