Year	current US$
1970	1446730778.0023
1971	1641663328.60079
1972	2014694945.63666
1973	2496444416.67756
1974	2725074869.24611
1975	3128606872.64387
1976	2960190487.65316
1977	3130516625.92657
1978	3734753322.54167
1979	4062047355.1274
1980	4949955345.332
1981	4628937645.38416
1982	4599676917.72577
1983	4082942396.82397
1984	3798833059.58686
1985	4083125372.39857
1986	5836237718.85586
1987	7257706881.89567
1988	8487482000.38307
1989	8893396812.2547
1990	11360418531.4647
1991	12507657103.3825
1992	14554928786.4716
1993	13145031906.9552
1994	13904862092.1114
1995	18094262969.9832
1996	18688550816.4531
1997	17523084047.4731
1998	18202119319.8307
1999	18735176527.6933
2000	17916787626.6723
2001	18662775215.0469
2002	20998484325.5846
2003	26173576445.9055
2004	30165616356.8353
2005	31664284542.5654
2006	33438367056.5603
2007	38095698831.1557
2008	43420671013.6589
2009	41452992158.9794
2010	40429030281.9987
2011	43131647452.1862
2012	38760035278.3758
2013	39351938280.7686
2014	40140066663.2268
2015	34378847170.0054
2016	35572468957.4582
2017	38243511456.2242
2018	42533288328.276
2019	42335646671.0513
2020	45166435259.124
2021	49794708273.2465