Year	current US$
1960	157148090063.2795
1961	158408605756.8684
1962	162135298445.56198
1963	180955858209.00244
1964	207767279305.521
1965	231258746331.1262
1966	258764878061.52078
1967	281221664038.8173
1968	310695704730.82025
1969	358268396086.12286
1970	412631100026.35486
1971	458546459057.48114
1972	570116346638.7607
1973	751512068909.4227
1974	865802852262.6168
1975	947550695384.7849
1976	1042088860657.0259
1977	1241833980271.3455
1978	1569054071388.7766
1979	1703076893809.2185
1980	1840088028690.5894
1981	2028262842507.6226
1982	1986883138004.235
1983	2115593849127.747
1984	2263578142661.0327
1985	2388076785530.7964
1986	3123743377430.427
1987	3667481813464.1143
1988	4409114816279.754
1989	4590725407020.225
1990	4790950086067.814
1991	5412827586676.351
1992	5917237193181.674
1993	6619443693296.335
1994	7404385947977.818
1995	8407601716571.456
1996	8101501479612.453
1997	7743809425337.105
1998	6931723210321.332
1999	7743402600342.683
2000	8377363424939.485
2001	7789513198046.967
2002	7912759253773.599
2003	8702214026618.327
2004	9758440010726.342
2005	10411320781531.824
2006	11034810130882.084
2007	12331150790689.781
2008	14220148735114.498
2009	14630641103929.129
2010	17078057240005.148
2011	19796933123174.48
2012	21174178691967.797
2013	21411284057214.535
2014	22089701789223.836
2015	21995274219766.67
2016	22776012762509.473
2017	24329094912610.03
2018	26487859556590.766
2019	27032494942206.605
2020	27156482410418.383
2021	31148240510250.83
2022	30663750183419.105
2023	30775659199419.906