Year	Current U.S. Dollars
1990-01-01	637.855741161630
1991-01-01	590.122225741606
1992-01-01	369.633368128684
1993-01-01	357.204339871367
1994-01-01	400.516091886143
1995-01-01	456.375899754645
1996-01-01	504.059514041494
1997-01-01	523.283569096003
1998-01-01	609.173025391007
1999-01-01	597.433481734807
2000-01-01	622.742747687983
2001-01-01	694.430511932268
2002-01-01	783.261609869997
2003-01-01	930.166156701539
2004-01-01	1191.961919907060
2005-01-01	1643.758542981450
2006-01-01	2158.002908954570
2007-01-01	3138.808703412480
2008-01-01	4010.026997226930
2009-01-01	2993.832531090330
2010-01-01	3218.381654884650
2011-01-01	3526.978142676590
2012-01-01	3684.804810326490
2013-01-01	3843.591213093400
2014-01-01	3994.712354795660
2015-01-01	3617.935745551760
2016-01-01	3605.743116842560
2017-01-01	3936.798319652870