Year	constant 2015 US$
1960	262.26397532607183
1961	259.05921441738724
1962	289.72085737175075
1963	310.7882560172395
1964	326.31842288957273
1965	323.2703533579008
1966	311.94316864922706
1967	334.27995248388004
1968	321.14627036208344
1969	314.58976468735665
1970	310.2667206789823
1971	314.93294159440353
1972	303.592269863391
1973	370.78293466004425
1974	397.58300613198656
1975	332.3169723151216
1976	357.1993401827243
1977	422.34250557340516
1978	485.8969570962103
1979	486.18809516663066
1980	459.82532785412496
1981	450.27914674224314
1982	457.424828349758
1983	453.7273829761972
1984	465.77269670859863
1985	465.09168008118854
1986	474.23885617727154
1987	466.6926266108096
1988	496.6655180299007
1989	515.5294220708776
1990	536.9997295146435
1991	564.8305483673057
1992	594.6961961936856
1993	606.7631816388017
1994	634.5776411651339
1995	647.5183772543699
1996	676.4091986917355
1997	695.2443664344739
1998	701.291738221476
1999	701.5899932155107
2000	727.1807659002411
2001	752.7623971157396
2002	758.9471560481326
2003	795.3467872987984
2004	811.9218633924132
2005	843.445694361979
2006	879.4106535795967
2007	913.1515548682261
2008	958.0105979157175
2009	939.334708688066
2010	982.1968514921048
2011	1020.01037469668
2012	1075.6232973802
2013	1084.7566892612622
2014	1092.0942655197123
2015	1113.8368345361157
2016	1140.3878736209658
2017	1090.990303003501
2018	1061.438058718517
2019	1033.3711639174776
2020	944.2471692193432
2021	950.2100257486105
2022	952.2528378196121
2023	950.7068689805271