Year	Current U.S. Dollars
1980-01-01	664.117560200257
1981-01-01	600.408765541326
1982-01-01	579.252000897100
1983-01-01	582.420126498067
1984-01-01	596.602467242029
1985-01-01	711.992700104710
1986-01-01	647.563353685906
1987-01-01	720.598938487943
1988-01-01	761.618457662551
1989-01-01	862.509057657804
1990-01-01	922.550169956192
1991-01-01	844.691134306625
1992-01-01	640.622297879065
1993-01-01	430.381595278873
1994-01-01	320.657792023357
1995-01-01	388.166766342963
1996-01-01	512.620965887672
1997-01-01	506.884952193443
1998-01-01	419.639845318854
1999-01-01	385.768853472854
2000-01-01	555.296941863334
2001-01-01	526.168742996854
2002-01-01	711.181789161759
2003-01-01	779.468317011824
2004-01-01	1041.087109209000
2005-01-01	1443.991923810720
2006-01-01	2062.415212123410
2007-01-01	2878.837305356230
2008-01-01	3868.579014460050
2009-01-01	3347.844900313660
2010-01-01	3531.416878319620
2011-01-01	4299.008136360050
2012-01-01	4539.467689271500
2013-01-01	4804.633825896120
2014-01-01	4707.578097846640
2015-01-01	3683.552607412700
2016-01-01	3308.772828455770
2017-01-01	4170.312280249450