Year	2010 U.S. Dollars
1977-01-01	4429.54255251132
1978-01-01	4595.40355685556
1979-01-01	4952.92044732024
1980-01-01	5363.42302580371
1981-01-01	5596.68643314411
1982-01-01	5639.68578345310
1983-01-01	6009.30273201763
1984-01-01	6705.70254770422
1985-01-01	7315.81662333180
1986-01-01	8272.02435806321
1987-01-01	8945.48375466537
1988-01-01	9522.29417834039
1989-01-01	10087.26514621290
1990-01-01	10380.30782565600
1991-01-01	10509.99224117540
1992-01-01	10457.71408979220
1993-01-01	10772.02187206480
1994-01-01	11205.82219378410
1995-01-01	10440.70689345450
1996-01-01	10834.62877143320
1997-01-01	11117.09478071360
1998-01-01	11335.12855555740
1999-01-01	11470.98649812470
2000-01-01	11981.91636162220
2001-01-01	11191.10258383280
2002-01-01	11147.26358319830
2003-01-01	11683.46255228840
2004-01-01	12218.74485526980
2005-01-01	12857.16430428810
2006-01-01	14325.48102264460
2007-01-01	15466.95279544970
2008-01-01	15278.87404706090
2009-01-01	13270.69710142310
2010-01-01	12174.69785945720
2011-01-01	11789.79907697130
2012-01-01	12069.81137727250
2013-01-01	11928.21846585050
2014-01-01	12403.52822098610
2015-01-01	12771.76757735190
2016-01-01	13315.50863111540
2017-01-01	13618.35970143320