Year Current U.S. Dollars 1974-01-01 1805.82875781251 1975-01-01 1933.72103540680 1976-01-01 2083.96851852302 1977-01-01 2354.17324701478 1978-01-01 2615.82196774286 1979-01-01 3157.18330405398 1980-01-01 4035.80324921570 1981-01-01 4426.28206792108 1982-01-01 4610.88656902017 1983-01-01 4882.62727927146 1984-01-01 5307.38503260419 1985-01-01 5539.04889859956 1986-01-01 6061.95368968875 1987-01-01 6652.55490361524 1988-01-01 7050.77455885520 1989-01-01 7769.00704156804 1990-01-01 7770.81525757908 1991-01-01 7681.98193268981 1992-01-01 7440.95749549934 1993-01-01 7777.55448524786 1994-01-01 8148.38241092534 1995-01-01 8537.05618693150 1996-01-01 9069.16890905997 1997-01-01 9549.89407899275 1998-01-01 10727.59583850410 1999-01-01 11200.57763284260 2000-01-01 11567.66612191350 2001-01-01 11513.93686388240 2002-01-01 11675.34754197390 2003-01-01 12028.48033850250 2004-01-01 12868.78732730120 2005-01-01 14223.25544051470 2006-01-01 15439.99214656830 2007-01-01 16381.49556400510 2008-01-01 16613.71921866150 2009-01-01 15922.90013286890 2010-01-01 15959.02979228740 2011-01-01 16610.41835203720 2012-01-01 16536.21464211520 2013-01-01 16326.91347886260 2014-01-01 16261.79931894770 2015-01-01 16129.04928276630 2016-01-01 15891.62654914460 2017-01-01 16788.68391959440