Year	constant 2015 US$
1960	455.2589152989684
1961	502.31978208025896
1962	512.7080962721109
1963	529.0871604353498
1964	592.4079350245086
1965	666.0532503950449
1966	704.6954425864315
1967	715.0781840124226
1968	720.9428827480453
1969	768.2337002249626
1970	760.0634132961231
1971	736.6541637716449
1972	771.2270731696143
1973	780.6574306978264
1974	798.5377842550041
1975	798.6725122875458
1976	764.0344901638197
1977	798.2686240842996
1978	865.7809383807758
1979	800.8677547552015
1980	892.7564995192427
1981	837.2713419936422
1982	781.2488568039842
1983	714.5398502777836
1984	729.5928941805154
1985	746.0598092817951
1986	735.2295144870408
1987	716.9758194332088
1988	741.8942252016217
1989	749.4030690596134
1990	725.9190579493219
1991	700.1951882141653
1992	653.3289544469528
1993	558.4883027089184
1994	639.932103355371
1995	659.991145783255
1996	691.4379697536011
1997	765.5921924350126
1998	726.5102622634978
1999	723.1822107474276
2000	697.4445371903707
2001	684.4113472616563
2002	692.2880835473927
2003	719.8040596447921
2004	694.289142485819
2005	644.9283222915847
2006	643.6901045193684
2007	617.8972733835359
2008	624.7601624233926
2009	640.6970441096578
2010	660.3285259698195
2011	680.4728705400594
2012	704.7760054827928
2013	726.9750038748992
2014	748.7349264122986
2015	770.1438073747414
2016	782.8965623980538
2017	794.4251002634966
2018	812.4588106646435
2019	832.1433943430346
2020	828.666926932417
2021	857.762914423025
2022	886.265439065731
2023	921.6931294848274