Year Current U.S. Dollars 1967-01-01 53.5161516974541 1968-01-01 65.0281528331395 1969-01-01 74.5743875367994 1970-01-01 79.6856573549133 1971-01-01 79.1500866513377 1972-01-01 90.8444953140178 1973-01-01 130.9799744049180 1974-01-01 202.4270417597580 1975-01-01 233.0392936428500 1976-01-01 278.1058483208020 1977-01-01 333.5873079284330 1978-01-01 365.8010590709430 1979-01-01 356.8131281549320 1980-01-01 491.4377788023400 1981-01-01 566.4252914565870 1982-01-01 583.5261716230910 1983-01-01 512.8452044918190 1984-01-01 525.2291404503590 1985-01-01 516.8678062457990 1986-01-01 474.7809450025920 1987-01-01 442.1481186938330 1988-01-01 481.7127613046370 1989-01-01 529.9316609358390 1990-01-01 585.0010310588040 1991-01-01 631.7004456972460 1992-01-01 681.8428679392280 1993-01-01 827.7823509729390 1994-01-01 912.0724733702470 1995-01-01 1026.2704926429000 1996-01-01 1137.3327243288600 1997-01-01 1063.7122656041700 1998-01-01 463.9685753290230 1999-01-01 671.1070220311280 2000-01-01 780.0920743987410 2001-01-01 747.9817454899740 2002-01-01 899.5556857283320 2003-01-01 1064.5094471368100 2004-01-01 1148.5690961840900 2005-01-01 1260.9288337007700 2006-01-01 1586.2050395993400 2007-01-01 1855.0939151917800 2008-01-01 2160.5276050738500 2009-01-01 2254.4455919921800 2010-01-01 3113.4806345143300 2011-01-01 3634.2768045177700 2012-01-01 3687.9539964578600 2013-01-01 3620.6639810952200 2014-01-01 3491.5958868506900 2015-01-01 3334.5490748484800 2016-01-01 3570.2846147653800 2017-01-01 3846.8643233099800