Year	current US$
1970	517702731.598811
1971	587026188.082013
1972	660940374.641681
1973	763840450.929724
1974	893763715.696704
1975	1056639872.00324
1976	1226580528.41718
1977	1418087008.86595
1978	1673828097.30648
1979	1961465667.16546
1980	2833167524.46353
1981	3120231882.91113
1982	3394736662.47068
1983	3833294778.59571
1984	4228340179.48738
1985	4125094568.53994
1986	4747923272.23943
1987	5441712352.96869
1988	6390920574.93829
1989	7398087507.01168
1990	10034851443.4337
1991	11650874347.9433
1992	13019264707.2231
1993	15457422098.1385
1994	18120551515.9874
1995	21747999014.0232
1996	24813707797.2266
1997	23960991982.4422
1998	21610455223.1501
1999	22493571011.6022
2000	23007571129.0506
2001	22760767963.5014
2002	23007322229.6738
2003	24371253051.8729
2004	26106572938.8472
2005	28197311844.5209
2006	32371510534.5588
2007	37361905192.533
2008	43919485610.8521
2009	43363125894.2201
2010	50204869753.5273
2011	57016363346.1606
2012	62997502922.0977
2013	67842375792.4422
2014	68171468583.065
2015	68466914310.4097
2016	70499711018.6875
2017	77450751035.6573
2018	85898710268.6617
2019	93808931202.9657
2020	95011551845.8987
2021	94970644073.5456