Year	2010 U.S. Dollars
1986-01-01	931.457997187948
1987-01-01	944.064394122256
1988-01-01	1049.984830721370
1989-01-01	1056.952111644660
1990-01-01	1095.932628052380
1991-01-01	993.509724982556
1992-01-01	845.709606636806
1993-01-01	714.762829974722
1994-01-01	571.403996831761
1995-01-01	535.043964563196
1996-01-01	564.531454061683
1997-01-01	611.521285879766
1998-01-01	614.989848634769
1999-01-01	628.069322847163
2000-01-01	654.312311839923
2001-01-01	682.624141983275
2002-01-01	676.269634182213
2003-01-01	716.264250843560
2004-01-01	757.374428304605
2005-01-01	747.565616648644
2006-01-01	762.520116111145
2007-01-01	819.806297297808
2008-01-01	880.278820143015
2009-01-01	894.817958649290
2010-01-01	880.037775119109
2011-01-01	921.177039121392
2012-01-01	905.165668802713
2013-01-01	984.239033535116
2014-01-01	1003.510404029070
2015-01-01	1021.160792185080
2016-01-01	1043.951112357800
2017-01-01	1070.323405934600