Year	2010 U.S. Dollars
1975-01-01	1663.01127967532
1976-01-01	2011.55418775150
1977-01-01	2087.30572138272
1978-01-01	2459.65060913933
1979-01-01	2608.03845247660
1980-01-01	3006.13589839606
1981-01-01	3036.67769262158
1982-01-01	3135.42176586459
1983-01-01	3068.65328848415
1984-01-01	3198.36514561551
1985-01-01	3176.87927674214
1986-01-01	3269.52177798525
1987-01-01	3238.76826089635
1988-01-01	3056.86181022821
1989-01-01	2534.71898417648
1990-01-01	2440.39462527441
1991-01-01	2357.23073814392
1992-01-01	2645.81498264365
1993-01-01	2622.15153760867
1994-01-01	2623.57206159867
1995-01-01	2678.07425911724
1996-01-01	2650.80923437099
1997-01-01	2672.81685166829
1998-01-01	2699.40995245769
1999-01-01	2743.02603014023
2000-01-01	2810.03514836385
2001-01-01	2906.62275295130
2002-01-01	3020.08984638891
2003-01-01	3082.05494543472
2004-01-01	3262.19057717045
2005-01-01	3417.73013672050
2006-01-01	3557.30268573751
2007-01-01	3687.23364490183
2008-01-01	3773.18767474681
2009-01-01	3786.53348077512
2010-01-01	3679.19027463278
2011-01-01	3578.76580869782
2012-01-01	3481.68874181930
2013-01-01	3401.07603697059
2014-01-01	3348.82685055198
2015-01-01	3297.89441163032
2016-01-01	3258.49324014107
2017-01-01	3238.25200473693