Year	Current U.S. Dollars
1984-01-01	489.948727063378
1985-01-01	641.738631479384
1986-01-01	468.324170562282
1987-01-01	278.419390867010
1988-01-01	148.984407685973
1989-01-01	172.541426822536
1990-01-01	203.255969785383
1991-01-01	234.719369360019
1992-01-01	250.492229217219
1993-01-01	287.187592933953
1994-01-01	325.629241773199
1995-01-01	363.471618271691
1996-01-01	377.971255904840
1997-01-01	345.496943120567
1998-01-01	248.541398375164
1999-01-01	277.495102820575
2000-01-01	324.845049645308
2001-01-01	326.640843433211
2002-01-01	319.827058448336
2003-01-01	362.625295771488
2004-01-01	417.751656096427
2005-01-01	475.416469486973
2006-01-01	590.301310777060
2007-01-01	709.767087046745
2008-01-01	899.495078724883
2009-01-01	948.127642147914
2010-01-01	1141.127115074190
2011-01-01	1381.425605545430
2012-01-01	1588.633147416820
2013-01-01	1838.806019923140
2014-01-01	2017.587781262050
2015-01-01	2159.433152094050
2016-01-01	2338.692156836560
2017-01-01	2457.376266425970