Year	constant 2015 US$
1960	1922.627145679101
1961	1909.678540561459
1962	1911.3735808653585
1963	1973.8808134909827
1964	2071.1416681095925
1965	2080.2766340600288
1966	2111.135228801136
1967	2138.7746527360177
1968	2226.2693576077813
1969	2309.546661952389
1970	2387.8625453947093
1971	2428.253813765954
1972	2460.8257504306703
1973	2573.107621229125
1974	2633.0767653091025
1975	2654.466933114248
1976	2624.8128250968753
1977	2533.1718597506574
1978	2506.2020740881067
1979	2500.815668905254
1980	2644.9736149737614
1981	2765.9658903816335
1982	2752.087650258299
1983	2759.832374090745
1984	2807.1006692337305
1985	2631.002838334642
1986	2550.1892555929776
1987	2557.473101502201
1988	2601.5136735852157
1989	2584.6826713646806
1990	2578.3466298615594
1991	2500.2235007757968
1992	2414.484591837678
1993	2415.8989973402013
1994	2469.588758227812
1995	2573.2445819006934
1996	2647.6528688458075
1997	2696.261237460235
1998	2709.3141782514726
1999	2725.92539260247
2000	2811.5278717898163
2001	2884.081909803186
2002	2948.6242324398054
2003	3004.221016037747
2004	3161.986707655569
2005	3324.3576775122065
2006	3581.4345624534726
2007	3776.3883465686476
2008	3779.0584542067436
2009	3637.6259542117814
2010	3798.87435862109
2011	3903.2389513819544
2012	3975.9630209373768
2013	3983.029516760054
2014	3948.971708618525
2015	3951.3691038813695
2016	3939.85735213925
2017	3991.9051976621913
2018	4067.9908896142674
2019	4067.1218211770647
2020	3771.2837527815227
2021	3951.678575227534
2022	4015.4898355872756
2023	4010.6266875942847