Year	constant 2015 US$
1960	1194.0301596225588
1961	1260.6180152344618
1962	1291.7229025777392
1963	1206.8532910293613
1964	1219.1263707395074
1965	1229.2522898386653
1966	1211.1462804415366
1967	1201.7575014250106
1968	1256.3007256905526
1969	1311.6971738964482
1970	1353.8668487633952
1971	1415.1028728631252
1972	1490.3623908283205
1973	1563.7688778362508
1974	1635.6109500076857
1975	1713.6461795337898
1976	1687.3110790115015
1977	1499.5360462594144
1978	1557.4529867448869
1979	1671.0655645828037
1980	1921.6838831965558
1981	2210.3934585991724
1982	2673.2663342543715
1983	2771.4524713254
1984	2890.903087484277
1985	2772.396971936051
1986	2506.450521565952
1987	2438.0052383208676
1988	2409.847820660226
1989	2402.3070518449526
1990	2358.9363000387534
1991	2349.222247715103
1992	2345.28935208529
1993	2256.7749659970273
1994	2072.839196562714
1995	2098.000776601852
1996	2130.3075296874936
1997	2073.96408228555
1998	2105.9699756745786
1999	1997.527501276469
2000	2068.3839129759003
2001	2067.814193420206
2002	2112.534019780748
2003	2071.5720671851814
2004	2071.983438674557
2005	2153.760967110421
2006	2240.0835323762676
2007	2016.3095388093511
2008	2073.613791483396
2009	2223.776232925343
2010	2345.1114072463997
2011	2320.3334556746413
2012	2481.294666425242
2013	2405.0334839685147
2014	2504.292625742171
2015	2455.340858244764
2016	2189.1627225361917
2017	2017.853956078126
2018	1924.7188017036938
2019	1901.0559930514585
2020	1740.8273418034826
2021	1718.2308099506122
2022	1704.2674841959854
2023	1697.9612192231207