Year	constant 2015 US$
1960	3650.036903459391
1961	3744.3511660839317
1962	3874.87572266619
1963	3984.5109261087555
1964	4159.538564016396
1965	4302.869290782585
1966	4443.071675994517
1967	4516.175613661462
1968	4686.780449126877
1969	4864.753091495275
1970	4943.051136128956
1971	5049.604411781564
1972	5229.242412341417
1973	5455.873444151013
1974	5454.734721482565
1975	5383.576928425048
1976	5564.38578064994
1977	5688.12014943046
1978	5818.6210474321215
1979	5956.518643458978
1980	5963.935266515959
1981	5973.173288216567
1982	5884.4270993378395
1983	5930.7176560361495
1984	6101.441650906345
1985	6218.511312793176
1986	6315.027803558342
1987	6435.143364350778
1988	6613.357238524265
1989	6741.599489416834
1990	6809.12185684704
1991	6780.449900212268
1992	6806.5522653213375
1993	6822.125907100923
1994	6942.16624440132
1995	7050.4737866082405
1996	7195.895458558871
1997	7371.519738845781
1998	7475.803707670703
1999	7635.746126166719
2000	7875.171663454418
2001	7928.807893488469
2002	8006.21765158846
2003	8149.7100792310475
2004	8406.789871309053
2005	8634.46888988612
2006	8906.121174544762
2007	9181.558450435059
2008	9255.41646834204
2009	9018.306059840785
2010	9312.797303714193
2011	9507.930175077097
2012	9645.938612979431
2013	9801.785672325632
2014	9986.631809023578
2015	10177.890514145385
2016	10343.835562300303
2017	10580.074977810313
2018	10807.888046208676
2019	10976.6187490865
2020	10547.776279081707
2021	11111.879678787382
2022	11364.965059834829
2023	11567.238560214013