Year	2010 U.S. Dollars
1960-01-01	612.255191617856
1961-01-01	622.183832788894
1962-01-01	666.658206593859
1963-01-01	708.635297711652
1964-01-01	689.266913983304
1965-01-01	716.006770546608
1966-01-01	693.111187310223
1967-01-01	674.432392363848
1968-01-01	658.067813306163
1969-01-01	604.663287751325
1970-01-01	605.909763057725
1971-01-01	622.738758378573
1972-01-01	574.433949277874
1973-01-01	463.488169706379
1974-01-01	490.292753434963
1975-01-01	463.346919980558
1976-01-01	453.363882422743
1977-01-01	474.685009594092
1978-01-01	523.253733061328
1979-01-01	544.640934132190
1980-01-01	517.331793597984
1981-01-01	505.696484904330
1982-01-01	499.293729193805
1983-01-01	462.061717602303
1984-01-01	373.426875861257
1985-01-01	390.888844004757
1986-01-01	404.018052194796
1987-01-01	392.879429088845
1988-01-01	407.937853505786
1989-01-01	399.624643885213
1990-01-01	382.485944993439
1991-01-01	379.737074266092
1992-01-01	343.512962369227
1993-01-01	336.944783365315
1994-01-01	338.592437603163
1995-01-01	335.480747750750
1996-01-01	334.845581243757
1997-01-01	331.896505099004
1998-01-01	353.417241825761
1999-01-01	338.847712829882
2000-01-01	322.149889580638
2001-01-01	332.755540702062
2002-01-01	330.548164308641
2003-01-01	335.668229742098
2004-01-01	323.969967892034
2005-01-01	326.331710069065
2006-01-01	332.710875938900
2007-01-01	330.633212491199
2008-01-01	349.004680222814
2009-01-01	333.690292940382
2010-01-01	348.151510969273
2011-01-01	342.748333917867
2012-01-01	368.942689415342
2013-01-01	373.736846240084
2014-01-01	386.725799663821
2015-01-01	388.316193530925
2016-01-01	392.148936453948
2017-01-01	395.937288666239