Year	2010 U.S. Dollars
1960-01-01	241.186085090714
1961-01-01	253.898344855601
1962-01-01	249.893982339870
1963-01-01	240.837955971689
1964-01-01	241.551464895432
1965-01-01	268.001214697424
1966-01-01	296.249689360129
1967-01-01	310.074765858859
1968-01-01	296.552214917319
1969-01-01	306.029077543831
1970-01-01	299.528548100157
1971-01-01	338.907259792195
1972-01-01	350.327467194044
1973-01-01	348.537822676707
1974-01-01	363.067000850227
1975-01-01	374.133634222451
1976-01-01	381.172481474952
1977-01-01	387.636702331386
1978-01-01	412.275682240475
1979-01-01	417.495358940118
1980-01-01	407.171657868823
1981-01-01	375.607059054908
1982-01-01	375.695380074878
1983-01-01	379.318009180592
1984-01-01	386.056202227114
1985-01-01	386.058057177502
1986-01-01	364.303498413161
1987-01-01	347.665133663368
1988-01-01	337.245849059576
1989-01-01	324.578888245948
1990-01-01	330.591120164555
1991-01-01	351.861643331406
1992-01-01	323.091772585869
1993-01-01	353.455711818268
1994-01-01	315.929623949565
1995-01-01	364.608505668198
1996-01-01	383.517887258826
1997-01-01	387.630640020127
1998-01-01	390.582491913197
1999-01-01	390.089366695589
2000-01-01	384.680169731663
2001-01-01	355.550848719160
2002-01-01	352.028451075147
2003-01-01	362.371936368191
2004-01-01	371.787370319128
2005-01-01	373.232124951135
2006-01-01	379.438608020211
2007-01-01	403.494596818576
2008-01-01	421.226144835484
2009-01-01	442.557284715216
2010-01-01	458.868174427665
2011-01-01	466.963342157269
2012-01-01	461.887341804434
2013-01-01	471.840466288291
2014-01-01	484.368624882756
2015-01-01	483.628811026417
2016-01-01	481.451936704379
2017-01-01	486.445325013324