Year	constant 2015 US$
1960	533.8114732210015
1961	538.0468380035574
1962	545.017158193384
1963	564.3344385472557
1964	586.6755100129743
1965	584.5732655526366
1966	578.9298412170674
1967	574.733307076179
1968	583.17487181302
1969	614.3388583563153
1970	643.2617838534095
1971	659.0523484108991
1972	655.1372768892073
1973	668.9342040105844
1974	684.7652634005359
1975	692.1457259786353
1976	713.0332048380142
1977	735.8812944611874
1978	745.6464153451351
1979	739.2650554677186
1980	758.5452724545403
1981	754.0824756417437
1982	751.494093996232
1983	749.5975067162954
1984	751.0569213010053
1985	761.9394731864592
1986	772.1164962302967
1987	780.8739551082048
1988	813.56807504099
1989	823.8092388205408
1990	845.0031429194432
1991	843.1861391190195
1992	855.1953250025639
1993	856.3245908623225
1994	871.4383765240362
1995	896.6627350311823
1996	933.8686641343261
1997	951.2441810991501
1998	974.3113211862232
1999	1006.2488945532057
2000	1027.8800432413473
2001	1051.5193148542048
2002	1078.110122173864
2003	1121.0969188712097
2004	1178.7377607857106
2005	1235.612884018517
2006	1299.0156458363226
2007	1365.217112120401
2008	1404.3355817529728
2009	1463.5469014991238
2010	1537.9909258964847
2011	1584.3761788154923
2012	1639.2869333384506
2013	1704.5391838000405
2014	1780.0574967349216
2015	1856.9260327411346
2016	1933.2343387586816
2017	2008.5754956398703
2018	2087.2395908190783
2019	2141.442571955016
2020	2036.0840425945976
2021	2142.9380536634394
2022	2239.729607409269
2023	2328.041978727631