Year	constant 2015 US$
1960	326.28339556983775
1961	283.02913714294874
1962	277.57397401289205
1963	288.0636851549297
1964	311.48100792205844
1965	336.7675756266695
1966	353.9887182784041
1967	340.1239078465485
1968	337.2829751552887
1969	365.7007280527911
1970	403.8066175114438
1971	419.72367317049304
1972	429.57029389101854
1973	454.36492943081544
1974	461.857708716714
1975	484.08793031547526
1976	489.2489931619981
1977	517.1225667562347
1978	555.7127518894133
1979	585.1913021769034
1980	619.4524453972658
1981	643.8123324793797
1982	673.507134631598
1983	713.4328659069748
1984	772.0556717358667
1985	819.7754267165956
1986	863.6271561009917
1987	926.6209457008944
1988	999.389476943323
1989	1039.3840093971992
1990	1075.4399181929755
1991	1143.8600086888391
1992	1253.7299052778972
1993	1376.0322296343988
1994	1506.282921270225
1995	1633.8773103041956
1996	1759.8152239415347
1997	1866.0123204324582
1998	1897.7410572526103
1999	1997.1244827431153
2000	2128.4474583341575
2001	2255.68129392227
2002	2415.8086010240518
2003	2609.558347828729
2004	2824.344786938585
2005	3081.1124507483946
2006	3395.600958802188
2007	3790.533826062455
2008	4086.2755458646866
2009	4380.169486549228
2010	4779.966051251637
2011	5153.383888122248
2012	5496.636822809394
2013	5848.417243257589
2014	6206.83865832967
2015	6572.889552640765
2016	6951.889247573882
2017	7361.807177012581
2018	7791.042643626027
2019	8194.964748270628
2020	8257.945233107228
2021	8855.562820504188
2022	9134.398123112103
2023	9577.028553419352