Year	constant 2015 US$
1960	3340.4919928941517
1961	3445.9844602096205
1962	3491.37605754812
1963	3459.7318447259813
1964	3609.5879353408454
1965	3707.692507452942
1966	3784.927219585818
1967	3843.773821681736
1968	4013.507864660096
1969	4176.89676626566
1970	4339.467194278251
1971	4524.567534180645
1972	4735.202180220714
1973	4996.74080647172
1974	5195.02471610706
1975	5256.654842364176
1976	5411.652428280794
1977	5536.167007725209
1978	5643.930552344925
1979	5923.681029463498
1980	6189.640533579712
1981	6110.82163673823
1982	5959.996318230668
1983	5689.434227995145
1984	5777.427255358733
1985	5838.714035324571
1986	5924.22977801437
1987	6004.12541373731
1988	5910.991089052825
1989	5893.952660756566
1990	5768.431719991155
1991	5847.207328752416
1992	5902.179705256809
1993	6070.792186015162
1994	6281.9974013149185
1995	6217.179539675402
1996	6356.490397957559
1997	6594.544106818062
1998	6681.213165417037
1999	6608.238211440939
2000	6743.284886568622
2001	6661.512529011806
2002	6597.486763558301
2003	6674.867502320284
2004	6941.078097777424
2005	7129.667337157368
2006	7411.729750183132
2007	7716.003090597693
2008	7918.263557455422
2009	7647.085847358379
2010	8070.457380809314
2011	8342.205536342055
2012	8465.32306649736
2013	8611.059010943116
2014	8637.594373237805
2015	8577.804211342
2016	8460.486518832191
2017	8542.292336641898
2018	8602.308032243036
2019	8585.968007882404
2020	7956.869677757374
2021	8469.687807905402
2022	8748.722322626432
2023	8872.245147555306