Year Current U.S. Dollars 1965-01-01 1113.40244720819 1966-01-01 1237.07923702427 1967-01-01 1235.89209715094 1968-01-01 1363.45304412287 1969-01-01 1303.73941344179 1970-01-01 1381.97216693132 1971-01-01 1455.30833622064 1972-01-01 1906.19298405412 1973-01-01 2915.26658305919 1974-01-01 6921.43644560660 1975-01-01 7226.43087291553 1976-01-01 8459.32421441424 1977-01-01 9914.12381169411 1978-01-01 10711.86604437890 1979-01-01 14941.06239884820 1980-01-01 25412.99495211370 1981-01-01 21821.79498501320 1982-01-01 20687.39975378700 1983-01-01 18123.85989389590 1984-01-01 17332.97478525940 1985-01-01 15694.53999369880 1986-01-01 10211.59628492340 1987-01-01 11591.78627314290 1988-01-01 11006.87051020080 1989-01-01 11869.98727420830 1990-01-01 13604.15682569670 1991-01-01 13901.72173234510 1992-01-01 15270.48612065520 1993-01-01 14572.10853466870 1994-01-01 14117.39214206690 1995-01-01 15929.16376176640 1996-01-01 16789.03717071420 1997-01-01 16656.08988052070 1998-01-01 12690.68932446220 1999-01-01 14097.93158825460 2000-01-01 18008.44825896120 2001-01-01 16468.12886260090 2002-01-01 16846.02198410830 2003-01-01 18555.56648510750 2004-01-01 21896.60526587770 2005-01-01 26102.13345421190 2006-01-01 30980.96691985660 2007-01-01 32672.36717110680 2008-01-01 37951.28059597820 2009-01-01 27965.47503795030 2010-01-01 35268.10117035810 2011-01-01 47017.02730047150 2012-01-01 47651.25908964130 2013-01-01 44597.27968153500 2014-01-01 41530.66897925810 2015-01-01 30967.89050637700 2016-01-01 26939.41804704400 2017-01-01 28290.58519557120