Year	constant 2015 US$
1960	943.2784617177913
1961	939.2569495216128
1962	948.9412673065551
1963	962.0242898222064
1964	973.0751164872777
1965	969.4316600363995
1966	989.9027663755064
1967	860.4080416871096
1968	892.2973754651949
1969	912.3519074682938
1970	916.2852853116477
1971	923.1947558508033
1972	922.5286687537522
1973	945.6586058724247
1974	1018.6395174564055
1975	1102.1321157497894
1976	1014.0678628292828
1977	1123.9910575382128
1978	1334.261350746276
1979	1375.294591304891
1980	1304.507918547129
1981	1473.8712368324607
1982	1546.4768391977016
1983	1618.0305329255486
1984	1689.9769696701285
1985	1771.1653610316548
1986	1833.4202860673379
1987	1738.8354698452238
1988	1554.2823818933489
1989	1480.6445107314546
1990	1348.730349826415
1991	1259.1172627452354
1992	1184.7870887650918
1993	1059.5203625892343
1994	1048.9872125824827
1995	1049.7066632542774
1996	1064.6460453403797
1997	1083.6416098265572
1998	1105.2452040811727
1999	1124.9004767335236
2000	1137.6245269439537
2001	1156.050390844122
2002	1175.8716737596224
2003	1206.6105120539116
2004	1256.693649775554
2005	1250.0588828255306
2006	1262.8719062364469
2007	1281.392484651455
2008	1281.0198371280471
2009	1277.181619246913
2010	1277.265693421462
2011	1283.567041297088
2012	1305.668033260305
2013	1332.8600041898635
2014	1366.9665946418024
2015	1399.6753359611448
2016	1420.0298720267551
2017	1429.2346850597798
2018	1445.26777135975
2019	1454.5640690208875
2020	1419.3282083778101
2021	1428.5625854260145
2022	1441.7949049762237
2023	1461.0196043387364