Year	constant 2015 US$
1960	3974.0336112047353
1961	4012.896637216092
1962	4135.767498361878
1963	4308.042818095166
1964	4509.884852262372
1965	4640.319987359377
1966	4698.7114928621495
1967	4883.630950653866
1968	4931.855521419612
1969	5008.897739050116
1970	5115.283567335761
1971	5180.57878425989
1972	5118.072393821979
1973	5201.925538599001
1974	5366.951193258505
1975	5309.533229841537
1976	5284.997405993725
1977	5140.353946915605
1978	5154.394657508205
1979	5209.290660959517
1980	5409.676517943533
1981	5554.697838659934
1982	5392.515193922736
1983	5152.953484836743
1984	5266.463464052062
1985	5050.868355497227
1986	4888.841648646803
1987	4819.972918651329
1988	4851.234626210343
1989	4803.645890745266
1990	4643.222314993887
1991	4479.851870589287
1992	4294.902917425277
1993	4269.700163552665
1994	4330.711476871873
1995	4392.0700411200105
1996	4511.641243891343
1997	4565.216658244259
1998	4531.295986697589
1999	4588.7560281192045
2000	4735.665531819573
2001	4820.644338957533
2002	4953.736447310297
2003	5052.909939562024
2004	5233.86627685538
2005	5458.230166359841
2006	5708.82308621003
2007	5954.168048149542
2008	6074.942671952759
2009	5910.788245763813
2010	6018.230753702789
2011	6130.971367313234
2012	6194.992758763795
2013	6263.104333634323
2014	6252.317977188062
2015	6204.929901458457
2016	6185.746047254767
2017	6233.187107765855
2018	6253.118996459137
2019	6188.703557732027
2020	5748.897844880265
2021	5959.443657379651
2022	6022.427508327194
2023	6006.45285746237