Year	constant 2015 US$
1960	761.6129620356593
1961	806.000436303925
1962	768.5555667679077
1963	782.4100887595444
1964	839.6849849170804
1965	818.8403424966341
1966	808.34097718223
1967	780.6646837276334
1968	780.7898253034516
1969	789.2811143049668
1970	836.9890788514637
1971	797.6787909047125
1972	737.9677759713902
1973	618.4690854198273
1974	574.0123944119872
1975	534.7166458693348
1976	522.1213798551448
1977	446.57354860554653
1978	504.59023779752846
1979	508.2685977497353
1980	516.1447174431785
1981	485.73913399887084
1982	457.5928869946341
1983	456.74094490449414
1984	476.6070134981349
1985	470.6952909560969
1986	472.75300477574945
1987	474.9700185488655
1988	482.8350220064089
1989	476.95428359259324
1990	502.58781844180027
1991	491.38640685345223
1992	501.45998389175145
1993	508.72059314509784
1994	517.3344091328759
1995	526.7890833558635
1996	517.1343733376533
1997	513.3061169916226
1998	512.275286915907
1999	522.6144767455556
2000	538.2602620851685
2001	549.9597022218107
2002	545.5427178844602
2003	557.8184188918696
2004	581.3786809655766
2005	611.1677732403028
2006	646.3683059494988
2007	687.1577211449965
2008	708.1929914702355
2009	718.075297331053
2010	742.609855158662
2011	781.236631327045
2012	803.3264327152272
2013	833.8824672201227
2014	856.5453807090257
2015	895.640330140895
2016	911.2448741432842
2017	956.345419874345
2018	1034.2863235674392
2019	1072.499795041888
2020	1092.0730991724067
2021	1166.127990651415
2022	1239.9148061362123
2023	1251.1642969730915