Year Current U.S. Dollars 1994-01-01 1201.58154213882 1995-01-01 1326.56285737146 1996-01-01 1317.46675131385 1997-01-01 1389.16497137651 1998-01-01 1465.04605685868 1999-01-01 1499.49217657019 2000-01-01 1476.17185000238 2001-01-01 1335.55319529359 2002-01-01 1156.21747345769 2003-01-01 1257.69857009689 2004-01-01 1337.56572430673 2005-01-01 1455.18787518115 2006-01-01 1441.46170046742 2007-01-01 1575.56340027289 2008-01-01 1855.45702045882 2009-01-01 1963.20151865719 2010-01-01 2338.71987682303 2011-01-01 2664.95138463952 2012-01-01 2787.16973802917 2013-01-01 2992.20099455427 2014-01-01 2960.77800405245 2015-01-01 2865.80510851865 2016-01-01 2949.68808537545 2017-01-01 3094.72574681783