Year Current U.S. Dollars 1981-01-01 2299199133.333330 1982-01-01 2532001966.666670 1983-01-01 2694636533.333330 1984-01-01 2059734525.000000 1985-01-01 2141505525.000000 1986-01-01 2894479033.333330 1987-01-01 3009311733.333330 1988-01-01 3170261666.666670 1989-01-01 3289326933.333330 1990-01-01 2517185660.000000 1991-01-01 2374108010.526320 1992-01-01 1290711863.849770 1993-01-01 741470800.539993 1994-01-01 906403930.752084 1995-01-01 1425356882.369990 1996-01-01 1331359924.362190 1997-01-01 1168938177.571870 1998-01-01 1124839904.056510 1999-01-01 1057508580.462450 2000-01-01 1131697254.990180 2001-01-01 1265989177.164020 2002-01-01 1392055720.379380 2003-01-01 1583797330.751650 2004-01-01 1981009807.809130 2005-01-01 2471681099.479470 2006-01-01 3371391056.381150 2007-01-01 4137457998.747100 2008-01-01 5449590187.786250 2009-01-01 4388014379.170880 2010-01-01 6609616683.646950 2011-01-01 9551980150.386110 2012-01-01 11343401728.590600 2013-01-01 11871513598.842500 2014-01-01 11232542815.827600 2015-01-01 10785835875.861500 2016-01-01 10426766277.331700 2017-01-01 9875455021.220790