Year Millions of 2000 Dollars 1973-01-01 2671.39 1974-01-01 6403.35 1975-01-01 8714.65 1976-01-01 15864.60 1977-01-01 14070.30 1978-01-01 14825.80 1979-01-01 13827.00 1980-01-01 16276.60 1981-01-01 18479.20 1982-01-01 20582.70 1983-01-01 21419.70 1984-01-01 26575.20 1985-01-01 27250.70 1986-01-01 28137.90 1987-01-01 28424.80 1988-01-01 28815.40 1989-01-01 29918.10 1990-01-01 25884.90 1991-01-01 28767.80 1992-01-01 29247.30 1993-01-01 28016.10 1994-01-01 29441.20 1995-01-01 31646.30 1996-01-01 32729.60 1997-01-01 35077.90 1998-01-01 35970.30 1999-01-01 39042.40 2000-01-01 43549.70 2001-01-01 52839.90 2002-01-01 57287.90 2003-01-01 64959.50 2004-01-01 77904.10 2005-01-01 98274.90 2006-01-01 118089.00 2007-01-01 160742.00 2008-01-01 191428.00 2009-01-01 204682.00 2010-01-01 214129.00 2011-01-01 218380.00 2012-01-01 224160.00 2013-01-01 270624.00 2014-01-01 290033.00 2015-01-01 304198.00 2016-01-01 302927.00