Year	2010 U.S. Dollars
1977-01-01	2945.87939793918
1978-01-01	3141.93739754743
1979-01-01	3336.86958885053
1980-01-01	3302.72844596218
1981-01-01	3295.38084983003
1982-01-01	3338.44201855987
1983-01-01	3355.40120801134
1984-01-01	3388.50547844735
1985-01-01	3538.39645107939
1986-01-01	3783.98216633515
1987-01-01	4159.92185586253
1988-01-01	4340.90833657111
1989-01-01	4559.93712087043
1990-01-01	4771.77603989269
1991-01-01	4829.31432754369
1992-01-01	4751.55843072468
1993-01-01	4606.02557098035
1994-01-01	4632.19844743426
1995-01-01	4690.73010271514
1996-01-01	4872.62187948076
1997-01-01	5100.51161033182
1998-01-01	5688.94410177693
1999-01-01	6073.98598655091
2000-01-01	6359.78271479599
2001-01-01	6216.99579348076
2002-01-01	6414.88500073995
2003-01-01	7003.12552976157
2004-01-01	6938.73824808453
2005-01-01	7837.35209468164
2006-01-01	7501.84215197130
2007-01-01	7936.04140516154
2008-01-01	7984.84152465942
2009-01-01	7430.56389412348
2010-01-01	7365.66665923640
2011-01-01	7393.88830636824
2012-01-01	7280.33653007385
2013-01-01	7421.47854069806
2014-01-01	7932.66825873697
2015-01-01	8406.77483120468
2016-01-01	8676.33919559901
2017-01-01	8957.59246105200