Year	current US$
1960	306.64164219310186
1961	314.50830629317943
1962	313.40212759926607
1963	314.9893687995735
1964	324.4367652079348
1965	320.89595891327076
1966	321.2030173059069
1967	311.7862956439652
1968	317.9925442884399
1969	293.62799645834326
1970	297.04297113757485
1971	297.7691434071778
1972	349.81631481990604
1973	390.4826826552756
1974	427.4374420267591
1975	560.7036726989242
1976	553.883396485109
1977	553.4819288954247
1978	603.7583425776774
1979	734.0995434459372
1980	790.7103565484603
1981	699.9098570056461
1982	668.0575173308953
1983	578.326149388595
1984	549.5545242926327
1985	585.6644208819646
1986	803.4847036583898
1987	938.857617453903
1988	902.2698643330905
1989	869.4599073752069
1990	980.754562057676
1991	935.6383892214267
1992	974.3312056329002
1993	898.9129990429742
1994	598.1454187946197
1995	732.8363730112807
1996	741.7616646817731
1997	667.4532061237799
1998	702.4336927902858
1999	695.5520828691734
2000	619.6421235249176
2001	654.8407273659586
2002	688.1874795336943
2003	840.3582540370013
2004	941.8737924685962
2005	1003.187193026156
2006	1038.5790919732663
2007	1210.1674978298242
2008	1419.530903246203
2009	1323.971225893804
2010	1286.6049664704562
2011	1383.5391164962607
2012	1334.7259152623462
2013	1391.5321896037049
2014	1417.0949874739995
2015	1238.1263997838907
2016	1290.7499712695146
2017	1385.1992136056958
2018	1484.2270703564373
2019	1462.678352521381
2020	1492.4759029352333
2021	1630.695071657929
2022	1594.9851531115332
2023	1745.9720675414653