Year	2010 U.S. Dollars
1975-01-01	7611.12372399144
1976-01-01	7365.44686671121
1977-01-01	8115.92197759149
1978-01-01	8723.82408011458
1979-01-01	8182.94497512258
1980-01-01	7743.32725129896
1981-01-01	7751.35478245462
1982-01-01	7580.24269386572
1983-01-01	7324.10861777274
1984-01-01	6992.97364195317
1985-01-01	6792.65705598831
1986-01-01	6458.00010847220
1987-01-01	5445.26106472169
1988-01-01	5805.85598691932
1989-01-01	6314.86995035511
1990-01-01	6160.94597538705
1991-01-01	6214.24855012472
1992-01-01	6091.02041799621
1993-01-01	5553.55991647118
1994-01-01	5642.08046831998
1995-01-01	5617.98575579013
1996-01-01	5609.78063006232
1997-01-01	5854.59694206964
1998-01-01	5873.95377238843
1999-01-01	5754.92265506366
2000-01-01	5685.38735001373
2001-01-01	5877.68042651630
2002-01-01	6063.10318942275
2003-01-01	6357.90354673587
2004-01-01	6871.83933395005
2005-01-01	7109.36930268371
2006-01-01	7304.04167165427
2007-01-01	7596.07996949693
2008-01-01	7827.23158176589
2009-01-01	7978.38828303205
2010-01-01	8303.31332009764
2011-01-01	8698.30210132410
2012-01-01	8841.04401466065
2013-01-01	9008.75624623772
2014-01-01	8942.96077705576
2015-01-01	8627.52723432901
2016-01-01	8108.23664453198
2017-01-01	8043.46212394566