Year	2010 U.S. Dollars
1960-01-01	214.136954470044
1961-01-01	181.217677492176
1962-01-01	193.953239849349
1963-01-01	198.122221553641
1964-01-01	206.289435971814
1965-01-01	209.803506248281
1966-01-01	214.271136487222
1967-01-01	237.755602550540
1968-01-01	231.170921449921
1969-01-01	222.724813129144
1970-01-01	265.229179977529
1971-01-01	268.644207587246
1972-01-01	248.697790543501
1973-01-01	263.272084401766
1974-01-01	258.462588473879
1975-01-01	256.515815155787
1976-01-01	271.842957220528
1977-01-01	296.556107016593
1978-01-01	286.818182523121
1979-01-01	284.361189879462
1980-01-01	279.958965460882
1981-01-01	306.101523535186
1982-01-01	295.174780278171
1983-01-01	298.204169945346
1984-01-01	290.660218774574
1985-01-01	315.872850697748
1986-01-01	316.742305242519
1987-01-01	324.379639217989
1988-01-01	330.866922120253
1989-01-01	326.182283933915
1990-01-01	329.157780967159
1991-01-01	337.708351238027
1992-01-01	333.943218933930
1993-01-01	307.123481022235
1994-01-01	290.319817820472
1995-01-01	263.270850380452
1996-01-01	239.039632650715
1997-01-01	232.506872313885
1998-01-01	240.627598151850
1999-01-01	234.684850023308
2000-01-01	228.247568715153
2001-01-01	227.428111030652
2002-01-01	230.996154204304
2003-01-01	221.227482455590
2004-01-01	224.515553169343
2005-01-01	219.186550201302
2006-01-01	223.403590258780
2007-01-01	226.304441502933
2008-01-01	229.834701437855
2009-01-01	230.053170925045
2010-01-01	231.194325649216
2011-01-01	233.518126039129
2012-01-01	235.705287861241
2013-01-01	239.331065435125
2014-01-01	243.101911790451
2015-01-01	226.528058204677
2016-01-01	218.283528380190
2017-01-01	212.547422124026