Year Current U.S. Dollars 1976-01-01 712828287.061289 1977-01-01 824521756.239311 1978-01-01 1011842811.480860 1979-01-01 1199425627.367990 1980-01-01 1113378889.423890 1981-01-01 1101537458.736640 1982-01-01 1037135746.148540 1983-01-01 1053426321.094800 1984-01-01 999567292.015391 1985-01-01 1035312585.397440 1986-01-01 1414911379.433260 1987-01-01 1847366883.570690 1988-01-01 2099354911.926890 1989-01-01 2171227747.249140 1990-01-01 2630672452.652470 1991-01-01 2862576745.909550 1992-01-01 3235255005.397350 1993-01-01 3266938219.628290 1994-01-01 3533471665.441750 1995-01-01 4021250438.563700 1996-01-01 4377983825.585990 1997-01-01 4169701519.188120 1998-01-01 4143114543.173550 1999-01-01 4267588097.261160 2000-01-01 4552726098.683410 2001-01-01 4550029781.010870 2002-01-01 4780519895.200590 2003-01-01 5579976302.349340 2004-01-01 6371512595.232470 2005-01-01 6275700517.354780 2006-01-01 7060624887.647010 2007-01-01 8348135161.287230 2008-01-01 10127474273.182300 2009-01-01 9089199556.943410 2010-01-01 10123211756.604000 2011-01-01 11549850205.531900 2012-01-01 11708352745.424300 2013-01-01 12153419713.759000 2014-01-01 12479165033.832300 2015-01-01 11606796988.878000 2016-01-01 12167863845.208100 2017-01-01 13510385309.181200