Year	2010 U.S. Dollars
1991-01-01	8852.11507394962
1992-01-01	8584.22922043130
1993-01-01	8544.51297729907
1994-01-01	8808.38191914486
1995-01-01	8952.03936979968
1996-01-01	8968.69896622656
1997-01-01	9286.95875845449
1998-01-01	9702.89056712530
1999-01-01	10040.51220618270
2000-01-01	10490.35031721850
2001-01-01	10918.24880567230
2002-01-01	11445.19358360580
2003-01-01	11919.76888713170
2004-01-01	12544.09037181780
2005-01-01	13120.62025612120
2006-01-01	13647.15236548320
2007-01-01	13727.73482694950
2008-01-01	13869.44116568770
2009-01-01	12974.14418049580
2010-01-01	13092.23375676950
2011-01-01	13347.58401770810
2012-01-01	13196.15333980380
2013-01-01	13509.92424693440
2014-01-01	14119.07041661700
2015-01-01	14629.23503257350
2016-01-01	14997.20052009750
2017-01-01	15647.84602749750