Year	current US$
1960	230496036.8793659
1961	244832039.17312625
1962	261184041.78944668
1963	275968044.1548871
1964	305312048.8499278
1965	344176055.0681688
1966	390992062.55873
1967	441728182.6765092
1968	485184189.62947035
1969	551263864.2022183
1970	645568215.2909144
1971	717750278.1056643
1972	858761926.0896797
1973	1299079410.4363782
1974	1467417672.1700213
1975	1356603608.0969455
1976	1511843235.4911094
1977	1640746618.6846733
1978	1947878830.6238317
1979	2293760510.9609036
1980	2545808455.523991
1981	2498190847.396678
1982	2368719683.4484835
1983	2562351551.0449133
1984	2552662617.1885433
1985	2423339171.5001493
1986	2647995602.2869754
1987	3143851794.087228
1988	3656177880.7062545
1989	3546472565.693639
1990	3219729083.0648656
1991	3787394957.9831934
1992	4377980510.055982
1993	4974550286.18152
1994	5502786069.651742
1995	4636057476.425685
1996	5155311077.389984
1997	4936615298.793669
1998	3789443014.6166177
1999	3477038204.0173297
2000	3521339699.074074
2001	3081024212.4292445
2002	2999511040.197643
2003	3536411824.2958045
2004	3927157866.9646463
2005	4865892972.275951
2006	8354911040.701925
2007	9545028944.345787
2008	11670892800.530945
2009	11619456449.265974
2010	14250786674.776615
2011	17985138065.854904
2012	21295168665.724728
2013	21261338064.878304
2014	23210823987.30796
2015	21723437010.098206
2016	20758876952.623165
2017	22742699138.356014
2018	24109780708.02678
2019	24751066910.540928
2020	23848445103.92275
2021	26113333240.233334
2022	31603619036.633846
2023	30932496249.791653