Year Current U.S. Dollars 1975-01-01 1088.88466930303 1976-01-01 1327.19467749813 1977-01-01 1464.90509369512 1978-01-01 1584.46034706648 1979-01-01 2015.69088604701 1980-01-01 2738.69602374482 1981-01-01 2690.79833001408 1982-01-01 2484.78967685326 1983-01-01 2290.61902755668 1984-01-01 2250.47933076549 1985-01-01 2083.70055589676 1986-01-01 2052.30571097463 1987-01-01 2371.09570856688 1988-01-01 2596.35323058432 1989-01-01 2653.52758268223 1990-01-01 3102.76776500071 1991-01-01 3127.10383897210 1992-01-01 3348.00494755762 1993-01-01 3130.65037524237 1994-01-01 3223.14258023826 1995-01-01 3631.54592694571 1996-01-01 3769.76430828352 1997-01-01 3868.18137440893 1998-01-01 3726.38498313587 1999-01-01 3936.62306143172 2000-01-01 4377.81630978720 2001-01-01 4273.62581036627 2002-01-01 4524.56782618554 2003-01-01 5500.29382285833 2004-01-01 6698.64467205724 2005-01-01 7973.39286014777 2006-01-01 9175.35220620796 2007-01-01 10923.41466698010 2008-01-01 13039.28982209850 2009-01-01 10881.24625054130 2010-01-01 12332.78968905670 2011-01-01 14888.63376513310 2012-01-01 15213.07688690410 2013-01-01 15454.87832809270 2014-01-01 15543.24722054500 2015-01-01 12676.92673116780 2016-01-01 12142.24577362970 2017-01-01 13134.42410238910