Year	constant 2015 US$
1960	1254.7339100850224
1961	1090.2642942199336
1962	1287.4980484092273
1963	1319.2073806099247
1964	1253.0414809230508
1965	1231.2554718611161
1966	1277.7862671023586
1967	1228.8647597393208
1968	1244.9918250010867
1969	1322.1894791743985
1970	1281.7333220511555
1971	1321.8875159949123
1972	1289.007035170873
1973	1356.8715350460848
1974	1362.2901138772222
1975	1260.4939853846372
1976	1163.183696041464
1977	1142.9721282228122
1978	1049.0606826724804
1979	1017.4736166540563
1980	1008.4304569776768
1981	1003.9754161458304
1982	972.4142757482647
1983	959.42030303537
1984	982.9410262286392
1985	958.0354536462712
1986	973.9746203965109
1987	969.8482554185667
1988	944.4568293467818
1989	903.6928171732342
1990	817.080969190176
1991	723.9866412472402
1992	628.7398880750388
1993	526.8928836444268
1994	482.7889093399663
1995	466.24575741029645
1996	452.7630576346691
1997	420.6241394949697
1998	404.1154831230036
1999	375.95052482592746
2000	339.9694492844089
2001	322.93003714483007
2002	322.4400519617659
2003	330.54898718377444
2004	342.4599973885405
2005	352.3212298094008
2006	359.42807168836663
2007	369.8407541540906
2008	380.4949104569361
2009	379.0548810496622
2010	393.02745089116
2011	406.20102874386856
2012	420.6293655169906
2013	441.0129782698655
2014	466.42494675623084
2015	482.0645686382378
2016	476.81490465324543
2017	477.84789121823763
2018	489.3823746358966
2019	494.81924776865026
2020	487.43313317262533
2021	501.2390884584847
2022	528.7888345048975
2023	555.7990986993906