Year	constant 2015 US$
1960	856.422546386719
1961	834.89453125
1962	869.464416503906
1963	822.624328613281
1964	791.009216308594
1965	820.899963378906
1966	770.958740234375
1967	762.153503417969
1968	757.092834472656
1969	747.844970703125
1970	771.627380371094
1971	767.072326660156
1972	706.770568847656
1973	689.469848632813
1974	742.035461425781
1975	826.951904296875
1976	929.207153320313
1977	950.167602539063
1978	859.848815917969
1979	785.596557617188
1980	767.000854492188
1981	792.426635742188
1982	808.755676269531
1983	800.228698730469
1984	743.121398925781
1985	683.355834960938
1986	706.270812988281
1987	793.312316894531
1988	786.168640136719
1989	851.108581542969
1990	791.589294433594
1991	835.550903320313
1992	876.652465820313
1993	901.717102050781
1994	889.03759765625
1995	917.762451171875
1996	948.710266113281
1997	1094.54992675781
1998	1116.26525878906
1999	1123.28955078125
2000	1160.33764648438
2001	1201.35119628906
2002	1239.50402832031
2003	1282.81799316406
2004	1312.67370605469
2005	1347.44567871094
2006	1392.07580566406
2007	1425.59375
2008	1434.08386230469
2009	1351.802734375
2010	1362.701171875
2011	1449.43676757813
2012	1352.86926269531
2013	1347.4755859375
2014	1371.69604492188
2015	1355.12609863281
2016	1359.1748046875
2017	1324.982421875
2018	1248.95727539063
2019	1186.90600585938
2020	1112.7216796875
2021	1062.83142089844
2022	1025.3212890625
2023	878.65673828125