Year Current U.S. Dollars 1981-01-01 972.62722227448 1982-01-01 1047.64476447645 1983-01-01 1196.52069242233 1984-01-01 1234.75834906047 1985-01-01 1144.67951895234 1986-01-01 1392.62262461447 1987-01-01 1494.15225488103 1988-01-01 1604.24846242880 1989-01-01 1588.99026498450 1990-01-01 1659.18220643579 1991-01-01 1702.05260443528 1992-01-01 1844.20187127871 1993-01-01 1987.31218030691 1994-01-01 2136.84626791893 1995-01-01 2356.75781632853 1996-01-01 2156.72846831774 1997-01-01 2056.20018571539 1998-01-01 2093.44439094848 1999-01-01 2073.36738416636 2000-01-01 2126.91385954485 2001-01-01 2206.69758350421 2002-01-01 2391.48548640669 2003-01-01 2434.71486683552 2004-01-01 2522.07627606867 2005-01-01 2649.67054077418 2006-01-01 2763.73900687430 2007-01-01 2891.92895640332 2008-01-01 2925.97763223410 2009-01-01 2917.00114678899 2010-01-01 3146.76394849785 2011-01-01 3297.55814396102 2012-01-01 3516.89991075328 2013-01-01 3614.13066126191 2014-01-01 3461.78116374910 2015-01-01 3390.91029173114 2016-01-01 3665.20747748087 2017-01-01 3753.25629303367