Year	current US$
1960	66.77009521312824
1961	71.99320347221938
1962	71.439099543679
1963	72.83982885116907
1964	78.39352491963524
1965	81.42826997063183
1966	83.61159819800011
1967	84.84324535139092
1968	97.08480547320025
1969	93.01876961353281
1970	91.47264873926461
1971	95.41896067226888
1972	106.94487977386362
1973	123.49490622001485
1974	125.6634114471212
1975	165.7933971908631
1976	194.60075308452716
1977	216.60450491473244
1978	258.06835542361193
1979	293.166651016016
1980	330.0029472966546
1981	284.6377617867053
1982	303.2508416992811
1983	263.98946921956576
1984	252.74858959904847
1985	338.7483079369752
1986	434.37511526221925
1987	459.1660547500917
1988	476.0208590932344
1989	452.9665593106726
1990	512.8508790051287
1991	475.2761463862928
1992	471.94063934455244
1993	413.959476683615
1994	267.0062765874796
1995	340.39967995052626
1996	299.61948973832335
1997	271.143300571857
1998	272.1015401271476
1999	273.4279279432484
2000	243.87758007529817
2001	242.57572677293408
2002	253.41067042505185
2003	283.67534812987054
2004	309.1902427874191
2005	317.87767793584425
2006	340.4145170993413
2007	388.4777716793738
2008	446.2287703592756
2009	452.92223646951163
2010	459.77698183324077
2011	515.209503489402
2012	525.8675040377285
2013	352.2268548712095
2014	394.856932975083
2015	351.8797547695543
2016	372.13545609303117
2017	414.74032227842014
2018	435.93229660798016
2019	426.40875312020944
2020	435.4692478000221
2021	461.13751095604727
2022	427.05809619126865
2023	445.028195988605