Year	constant 2015 US$
1960	26088767962.434048
1961	27239966541.601578
1962	28706869419.414925
1963	30248353421.71771
1964	29933954986.112473
1965	29907733374.42576
1966	32899787119.64821
1967	33895827029.50275
1968	35477096011.920685
1969	37397519099.02864
1970	37823043477.13218
1971	41880638380.87903
1972	43455114641.21451
1973	41050618920.54875
1974	36579141833.74955
1975	31896967028.8662
1976	31375882801.210896
1977	35756380179.01042
1978	38782404692.00525
1979	41913719092.731155
1980	44664546521.983536
1981	49915276204.52951
1982	41515596902.89317
1983	38954547570.74035
1984	39832202271.386894
1985	40140069934.55152
1986	41984071397.30579
1987	45460708185.36344
1988	48760467188.9071
1989	54542164232.82672
1990	55949822836.22183
1991	59775690874.502716
1992	68280295772.37502
1993	74791204054.07211
1994	79378270891.08873
1995	90355561786.80841
1996	97799391408.42035
1997	105116641310.74585
1998	109789801492.57797
1999	105564675372.58838
2000	111650460482.92426
2001	114200028996.49228
2002	117326872358.80687
2003	122873487052.90411
2004	132405741641.11183
2005	146826266408.53052
2006	159467718253.29868
2007	171163306912.928
2008	186073787190.33234
2009	173560912058.24246
2010	197163082957.0661
2011	216743379696.57117
2012	233267752805.03238
2013	239917045606.2449
2014	238473454620.63342
2015	244794733173.45535
2016	249476570305.11307
2017	256634749309.79657
2018	269570583277.83865
2019	271831985356.34583
2020	246411246207.37225
2021	298961764182.2995
2022	305854340447.9911
2023	292952776325.8009