Year	Current U.S. Dollars
1986-01-01	318.200291127087
1987-01-01	313.002495302223
1988-01-01	322.070980182790
1989-01-01	307.757879868946
1990-01-01	324.827680769658
1991-01-01	325.372968547145
1992-01-01	285.962518575736
1993-01-01	274.216817392022
1994-01-01	219.614599892135
1995-01-01	243.106060411286
1996-01-01	268.417450595682
1997-01-01	272.557568514837
1998-01-01	269.141189706030
1999-01-01	266.560840821359
2000-01-01	302.918035860829
2001-01-01	278.037883742839
2002-01-01	289.764499891724
2003-01-01	306.113686485953
2004-01-01	341.458197281152
2005-01-01	384.731491417241
2006-01-01	422.446709334848
2007-01-01	490.255084877238
2008-01-01	579.243888354156
2009-01-01	592.078305491873
2010-01-01	628.509570516666
2011-01-01	694.939014721889
2012-01-01	733.572011155157
2013-01-01	780.316153892040
2014-01-01	817.052991113301
2015-01-01	761.645110283475
2016-01-01	702.750493157562
2017-01-01	750.433044360923