Year	constant 2015 US$
1960	951.1399936637154
1961	926.5884032570468
1962	960.2783174476092
1963	991.7358060163427
1964	1012.6061679490541
1965	1031.0696017725797
1966	1017.3285476133567
1967	934.4854841287295
1968	944.0572940099531
1969	1024.6331137503046
1970	1084.5486085799603
1971	1155.9532429520725
1972	1164.6375831602916
1973	1180.0238422626944
1974	1243.9200729624333
1975	1204.2434148674538
1976	1251.9902815912433
1977	1273.9071133471252
1978	1233.6496064995288
1979	1264.4690151613852
1980	1281.5169646790976
1981	1200.8309340258777
1982	1156.9428673594766
1983	1071.7492219055969
1984	1048.5406971297496
1985	1056.9555518481675
1986	1055.3100701613928
1987	1067.705195386799
1988	1080.496529577942
1989	1067.0519949394488
1990	1127.156221768069
1991	1008.9977204677892
1992	1004.6068623147057
1993	969.6467032654487
1994	938.3076257689604
1995	938.0481895515929
1996	965.0384977778873
1997	999.7375753531072
1998	1040.6533164856137
1999	1055.0575772465402
2000	1083.3272714679495
2001	1099.162518530446
2002	1129.8731701303352
2003	1088.1327857324977
2004	1183.2988644207317
2005	1217.7211204473563
2006	1256.9805639996277
2007	1297.324019653874
2008	1341.2337615873016
2009	1365.8693260571956
2010	1413.370500404319
2011	1431.1539951424772
2012	1448.0602577990032
2013	1487.9371585357815
2014	1518.8570288809685
2015	1524.7572793082597
2016	1517.9521906589298
2017	1499.7439889662298
2018	1496.462540190897
2019	1503.9276714843895
2020	1425.6390786051531
2021	1431.5823800476587
2022	1452.1233489308675
2023	1447.8573974256158